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TSO Products

GRS-16 PE K Guide Rail Square for Kreg

(26 reviews) Write a Review
SKU:
61-459
  • Featuring a custom high strength, stainless steel draw latch for maximum clamping power.
  • The bestselling guide rail square has now been adapted to fit the Kreg Adaptive Cutting System!
  • Use the GRS-16 PEK to square off either the front or back of your workpiece.
  • Featuring a custom high strength, stainless steel draw latch for maximum clamping power.
  • Presenting the fastest, easiest and most accurate way to square cuts with your Kreg Adaptive Cutting System track saw system.
  • Your guide rail is completely supported by the full-height, precision machined mating edge of the GRS-16 PEK.
  • Simply slide the GRS-16 PEK through the underside T-track on your guide rail, secure the clamping latch, and you're ready to cut perfect 90 degree angles!
  • GRS-16 PE K Guide Rail Square for Kreg
  • GRS-16 PE K Guide Rail Square for Kreg
  • Two guide rail squares fit neatly into a Systainer with our custom dual-level foam insert (sold separately).
  • Store and protect your GRS-16 on the go, with our Foam Insert and TSO Systainer3 (sold separately).
  • Proudly made in the USA
$194.95
Frequently bought together:

Description

The Original Guide Rail Square, Now Compatible with Kreg's Adaptive Cutting System (ACS)

The proven design of the GRS-16 Family has now been adapted to fit Kreg's track saw cutting system! Like the original GRS-16 and GRS-16 PE squares, the GRS-16 PE K makes it faster to achieve dead square cuts with your Kreg Adaptive Cutting System Plunge Saw. With two reference parallel edges, the GRS-16 PE K permits squaring against the front or back of your workpiece.

Connect your GRS-16 PE K to the TSO Parallel Guide System
Part of TSO's system approach to woodworking, the GRS-16 PE K is compatible with the TPG Parallel Guide System.

GRS-16 PE K Highlights

  • Ultra-light and balanced design machined from 6061-T6 aluminum, with a mating vertical edge that perfectly matches the height of your Kreg guide rail extrusion for maximum support and engagement
  • Two squares can now fit in a single Systainer—see our Dual FoamPac Systainer Insert and limited edition TSO Blue Systainer3 M 112
  • Custom high-clamping-force stainless steel latch with coating to grasp and protect the edge of your guide rail
  • Filleted T-feature lead-in makes it even easier to install onto your guide rail—"five seconds to square!"
  • Accessory mounting holes tapped for M6 threads—enables connection to the Angle Accessory
  • Sustainable, fully recyclable all-corrugated packaging
  • Proudly made in the USA

See How It Works

The design of the GRS-16 PE K is based on our popular GRS-16 PE square, and shares the same features and benefits. See the GRS-16 PE K put to use in the video below.

Simple, Automatic Accuracy

Before the GRS-16 family, accessories for squaring up your track saw guide rail relied on the loose-tolerance T-slot found on just about every guide rail. To overcome this inherent inaccuracy, you had to rely on a separate reference square, plus a combination of loose parts like T-bars, hex bolts, knobs or wingnuts. No longer! The patented GRS-16 PE K is completely self-contained and self-aligning, thanks to an innovative, high-force integral draw latch mechanism. Simply slide the GRS-16 PE K onto your guide rail, lock the draw latch, and you're done. Five seconds to square.

Accurate cuts with your track saw often require using a screw clamp or quick clamp, sliding into a guide rail T-track. For this reason, we've designed notches in both reference edges of the GRS-16 PE K to accommodate popular screw clamps and rapid clamps.

Built for a Lifetime of Service (or Longer)

The GRS-16 PE K is precision CNC machined from a single piece of 5/8" (15 mm) thick 6061-T6 aluminum and then anodized for a non-marking, high durability finish. The high clamping-force draw latch is built from stainless steel to resist rust and pitting over time. Despite its high clamping-force, a comfort coating on the latch handle makes it easy to generate the leverage necessary to engage, release or reposition the square along your length of track. The GRS-16 PE K is made in the United States, and comes with our five-year warranty.

Technical Details

  • Dimensions: 15.2 x 6.0 x 1.4 inches (386 x 152 x 36 mm)
  • Weight: 1.9 lbs (862 g)
  • Material: 6061-T6 aluminum, anodized, 5/8 in (15 mm) thick
  • Compatible Guide Rails: Kreg Adaptive Cutting System guide rails (ACS430); not compatible with the Kreg Accu-Cut™ system
  • Clamping Mechanism: Over-center draw latch (304 stainless steel) with compensating spring; secured with M4x0.7-10 stainless steel socket head screws
  • Accessory Mounting Holes: Tapped for M6 threads for compatibility with Angle Accessory
  • Made in the USA

Proudly Made in the USA

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Warranty & Returns

5-Year Limited Warranty

  • Coverage: Defects in materials and workmanship for five years from the original retail purchase date.
  • Eligibility: Products purchased new from TSO or an authorized retailer. Covers the original purchaser or original recipient of a product purchased new as a gift. Nontransferable, except where required by law.
  • Exclusions: Normal wear, accidental damage, misuse, and other exclusions outlined in the full policy.
  • Need help? Contact TSO directly for support and warranty service—even if purchased through an authorized retailer. Proof of purchase is required.

View full warranty terms

Returns

  • Within 30 days: Unused products in original, resellable condition with all packaging and accessories qualify for a full merchandise refund.
  • 31–90 days: Returns may be accepted at our discretion and are subject to restocking fees.
  • Before sending anything back: Contact us for return authorization.
  • Purchased from a retailer? Contact the original seller for returns and refunds.

These return terms apply to purchases on tsoproducts.com. Ordinary return deadlines and unused-condition requirements do not apply to eligible warranty claims.

View full return terms

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26 Reviews

  • 5
    GRS-16 PE K Guide rail square

    Posted by Chris on 23rd Jul 2026

    Very nice and sturdy built. works great

  • 5
    Best tool to have

    Posted by Javier on 14th Jan 2026

    As soon I got this, I started using it and the cuts came out great. Great tool to have when you are on the go or when helping a neighbor to cut a table.

  • 4
    Works as Described

    Posted by Mark on 19th Dec 2025

    Works as it should and saves some time.

  • 4
    Nice and simple

    Posted by Howard Mitchell Goldberg on 3rd Jul 2025

    I think it's nice and simple. took me a time to make it more efficiency to make it 90 degree at once. For this price I think it should be a bit lower than what it is price.

  • 5
    GREAT PRODUCT, EASY TO KEEP THINGS SQUARE

    Posted by Gregory Costa on 3rd Apr 2025

    LOVE IT

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