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.
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

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26 Reviews
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Track saw Guide square
I used it the other day for the first time and found it was incredible. It was the best attachment for my tracksaw rail
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Excellent, perfectly square the first time
Put it on my Kreg track and got perfectly square cuts. One of the better investments I have made
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Tso Square
This square was so helpful for an on site cabinet build. It is a true 90 when attached to my track. Love this thing!
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GrS-16 PE K
An awesome product that is easy to use.
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Good looking product
Haven't gotten to actually use it, that's coming but looks great and is super secure on my track. I'll be adding the parrell guides as well