What's the difference between the Alpha-C cone laser and a standard rotary laser for grading work?

A standard rotary laser creates a flat reference plane; you must reposition it multiple times to grade complex surfaces or manage multiple drain points. The Alpha-C projects a 360-degree dome-shaped cone beam that radiates from a central point with adjustable slope up to ±1.7 percent, eliminating repositioning and establishing consistent drainage slopes across your entire work area in a single setup. For parking lots, sports fields, and drainage-critical work, this translates to measurably faster setup and fewer grade errors.

How accurate is the Alpha-C at maintaining slope over an extended grading operation?

The system is designed to hold slope accuracy throughout the day with proper setup and maintenance. Perform daily calibration checks at project start and periodically verify slope settings during work. Clean laser optics regularly to maintain cone beam pattern clarity, and monitor the R9 receiver signal—heavy equipment interference can occasionally cause signal loss, which you'll catch immediately through operator feedback.

Can I use the R9 receiver on my existing grading equipment, or do I need special mounts?

The ProShot R9 receiver is designed to integrate with standard grading equipment and grade control systems. It mounts on your grading blade, excavator, or rod setup and provides continuous visual and audible indication. Specific mounting hardware may vary by equipment type; Express Tools support can advise on your particular setup.

What's the maximum slope the Alpha-C can establish, and is ±1.7 percent sufficient for typical drainage projects?

The Alpha-C adjustable slope range is up to ±1.7 percent, which covers most professional drainage applications including parking lot crowns, sports field grades, and swale work. For specialized applications requiring steeper slopes beyond ±1.7 percent, consult your project specifications; the Alpha-C is engineered for the slope range that handles the majority of commercial grading work.

Does the cone beam work effectively in bright sunlight or across long distances?

Yes—the ProShot R9 receiver provides clear visual and audible grade indication even in bright sunlight and across extended distances, which is a key advantage over conventional laser feedback systems. Your machine operators will have reliable slope confirmation throughout the day, whether grading in full sun or overcast conditions.

What maintenance does the Alpha-C require to keep it grading accurately?

Maintain the system with daily calibration checks at project start, periodic slope setting verification during work, and regular cleaning of laser optics to preserve cone beam pattern clarity. The robust housing protects internal components from dust and moisture, but treat it like precision equipment: store it safely between jobs and keep optics clean. Express Tools support can provide detailed maintenance guidelines specific to your job site conditions.

ProShot Alpha-C Cone Grade Laser 020-0020C with R9 Receiver, Batteries, and Hard Case on Sports Turf

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At a Glance

Model: ProShot Alpha-C Cone Grade Laser 020-0020CH
Receiver: ProShot R9
Beam Pattern: 360-degree cone/dome
Adjustable Slope Range: ±1.7 percent
Grade Capability: Cone grade
Key Feature 1: 360-degree cone/dome beam pattern

SECOD12388SKU ProShot Alpha-C Cone Grade Laser 020-0020CH 1.7 percentNew

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Seco D12388 Drill and Tap Kit for mounting Spectra DM-20 Bulldozer Mast

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±1.7 percent Range

Cover large layout jobs with a ±1.7 percent working reach.

Grade Capability

Handles Cone grade so crews can match design slopes.

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Quick Answer

What is the SECO D12388?

The Seco D12388 Drill and Tap Kit for mounting Spectra DM-20 Bulldozer Mast is a SECO professional jobsite instrument with ±1.7 percent adjustable slope range. It's available from Express Tools as an authorized SECO dealer with same-day shipping on in-stock orders.

FIELD APPLICATIONS

What contractors use this accessories for

Parking Lot and Pad Site Grading

Establish proper crown slopes and drainage patterns from catch basins across large paved surfaces. The cone grade capability eliminates multiple laser repositioning moves, allowing your crew to grade continuous sections while maintaining consistent fall toward drainage points.

Sports Field Construction

Create the subtle but critical crown slopes required for athletic field drainage and player safety. The Alpha-C's adjustable slope up to ±1.7 percent delivers the precision drainage grades that turf drainage systems demand, reducing ponding and extending field playability.

Drainage and Swale Grading

Manage water runoff on retention ponds, swales, and subsurface drainage systems with precise slope control from a central point. The 360-degree cone beam provides continuous grade reference as you move equipment around irregular terrain without constant laser repositioning.

Complex Multi-Directional Grading

Handle site work where multiple drain points or irregular surface contours require slope control in different directions simultaneously. The cone grade configuration establishes consistent fall across the entire work area, eliminating the need to reset your reference plane multiple times during the day.

Site Preparation and Utility Installation

Grade around existing utilities, infrastructure, and irregular topography while maintaining accurate slope reference. Machine operators using the R9 receiver get continuous feedback, reducing grade errors and the costly rework that comes with missed slope targets on site work projects.

PRODUCT OVERVIEW

Product Description

Purpose-Built Mounting Hardware for Professional Grade Control

The Seco D12388 Drill and Tap Kit delivers everything earthwork contractors need to permanently and securely mount the Spectra DM-20 mast to dozer blade brackets. Whether you're prepping a machine in the shop or fitting out a fleet on a tight schedule, this kit eliminates the guesswork by providing the correct drill bits, taps, and hardware in a single package — ensuring a clean, thread-accurate installation every time.

Product Overview & Jobsite Applications

Dozer-mounted grade control systems demand rock-solid mast attachment. Vibration, ground shock, and constant blade cycling create relentless stress on mounting points. The D12388 kit is engineered specifically for the DM-20 mast interface, giving contractors a manufacturer-approved method to drill and tap blade bracket steel to the precise specifications required. This eliminates field improvisation and protects the investment in both the mast and the grade control receiver above it. Ideal for new machine setups, fleet retrofits, and replacement installations after bracket damage.

Key Specifications

Part Number: D12388
Manufacturer: Seco
Compatible Mast: Spectra Precision DM-20 Dozer Mast
Application: Drill and tap mounting for dozer blade bracket steel
Kit Type: Complete installation hardware set
Usage: Professional contractor grade control mounting

What's in the Kit

Correct-Spec Drill Bit(s): Sized precisely for DM-20 mast bolt pattern pilot holes
Matching Tap(s): Thread-cut taps calibrated to DM-20 fastener thread specifications
Installation Hardware: Fasteners and components required to complete the mount
Manufacturer Instructions: Step-by-step guidance for accurate field or shop installation

Job Applications

New Machine Setup: Outfit a fresh dozer with a DM-20 grade control mast from day one. Drill and tap blade brackets to factory spec before the machine ever hits a job site, ensuring a clean installation with no field modifications required.

Fleet Retrofits: Upgrading multiple machines to laser grade control? The D12388 kit standardizes the installation process across your fleet, so every mast is mounted identically and technicians know exactly what to expect on every unit.

Bracket Replacement After Damage: When a blade strike or transport incident damages an existing mounting bracket, the D12388 lets crews re-drill and re-tap replacement steel to restore a proper mast mount without sending the machine to a dealer.

Rental Machine Prep: Equipment rental operations adding DM-20 masts to rental dozer inventory can use this kit to prepare machines quickly and consistently, minimizing downtime between customer deployments.

Compatible Accessories

Related Guides

Frequently Asked Questions

What equipment is the Seco D12388 Drill and Tap Kit designed for?: The D12388 is specifically designed for mounting the Spectra Precision DM-20 dozer mast to dozer blade brackets. It provides the correct drill bits, taps, and hardware to achieve a manufacturer-specified installation on the dozer blade bracket steel.
Does this kit include all the hardware needed for a complete DM-20 mast installation?: The D12388 kit includes the drilling and tapping components plus associated fasteners needed to prepare the blade bracket and secure the DM-20 mast mount. For a complete grade control system, you will also need the DM-20 mast and your laser receiver assembly, available separately.
Can this kit be used on any dozer brand or is it machine-specific?: The D12388 is designed around the DM-20 mast mounting bolt pattern and thread specifications. It is compatible with any dozer model where the DM-20 blade bracket adapter is being used, making it broadly applicable across major dozer brands including Caterpillar, John Deere, and Komatsu when paired with the correct Seco bracket adapter.
Is the Seco D12388 a one-time use kit or can it be reused?: Drill bits and taps in the kit can typically be reused for multiple installations depending on the hardness of the bracket steel and care during use. Fasteners included in the kit are generally intended for a single installation. Contact Express Tools if you need replacement consumable components for ongoing fleet work.

Why This Equipment

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KIT CONTENTS

What's In The Box

ProShot Alpha-C Cone Grade Laser Transmitter
ProShot R9 Receiver

Why Buy This?

Professional-grade equipment, authorized dealer pricing.

The tools contractors trust on municipal infrastructure, commercial projects, and high-tolerance earthwork aren't available at hardware stores — and they shouldn't be. This equipment is engineered for professionals, and buying it through an authorized dealer means you get full manufacturer support when it matters.

Express Tools carries only factory-fresh inventory from brands contractors specify by name. No gray-market product, no import-spec units, just authentic gear with legitimate firmware and calibration documentation.

Same-day shipping on in-stock items, expert support before and after the sale, and a 30-day return window on most products. If you have questions about specs, compatibility, or applications, call us — we know this equipment.

TECHNICAL SPECS

Specifications

Technical Specs

Manufacturer data and field-verified measurements.

Model	ProShot Alpha-C Cone Grade Laser 020-0020CH
Receiver	ProShot R9
Beam Pattern	360-degree cone/dome
Adjustable Slope Range	±1.7 percent
Grade Capability	Cone grade
Key Feature 1	360-degree cone/dome beam pattern
Key Feature 2	Adjustable slope up to ±1.7 percent
Key Feature 3	ProShot R9 receiver integration
Key Feature 4	Central point grading capability
Key Feature 5	Precision slope control
Key Feature 6	Specialized for complex contour grading
Use Cases	Drainage work and slope grading; Sports field construction; Parking lot grading; Complex surface contour grading; Applications requiring consistent fall; Irregular surface grading
Setup Steps	Position Alpha-C transmitter at central grading point \| Mount on stable tripod or grade stake \| Activate laser system and allow stabilization \| Set desired slope percentage (up to ±1.7 percent) \| Position R9 receiver on grading equipment \| Align grading operations to cone beam guidance
Pro Tips	Position Alpha-C at central point to maximize coverage area \| Set appropriate slope for specific drainage requirements \| Use R9 receiver on grading blade for continuous feedback \| Verify slope settings at project start and periodically during work \| Clean laser optics regularly to maintain cone beam pattern clarity \| Perform daily calibration checks to ensure accuracy
Compatible Equipment	ProShot R9 receiver; Grading equipment; Grade control systems; Excavating equipment
Common Issues	Slope accuracy drift during extended use \| Receiver signal loss with heavy equipment interference \| Incorrect slope percentage configuration
Application	Drill and tap mounting for dozer blade bracket steel

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