Description
Square Cuts Made Fast and Easy with Your Track Saw
Breaking down sheet goods is easy with a TSO Guide Rail Square in your shop. This must-have track saw accessory turns your guide rail into a large, precision square, enabling fast and accurate 90-degree crosscuts with less setup time, less marking, and fewer errors.
The GRS-16 PE v2 Guide Rail Square is perfect for crosscuts on sheet goods and is compatible with Festool, Makita, Milwaukee, Powertec, Triton, and WEN track saw systems.
Key Features
- Born Square: A proven design, CNC-machined from a single block of 6061-T6 aluminum, will never require fine-tuning or calibration.
- Work Faster: No need to scribe your cutting line; make a small tick mark at your desired cutting position, align the guide rail, and you're ready to start cutting.
- Fewer Errors: Cut your marking and measuring in half, and with it, your chances of making a mistake that costs you valuable time and materials.
- Parallel Edge: Reference your work from the front or back edge to fit your workflow.
- Solid Connection: A latch coating grasps the guide rail and protects it from damage.
- Drop-on Convenience: Quickly attaches without the need to remove accessories, like hose deflectors, track connectors and clamps.
- Clamp Compatible: Notches on both reference edges provide room for your favorite track clamp. Including the Festool Screw Clamp (489570), Ratcheting Clamp (491594), and Axminster guide rail clamps.
- System Approach: Compatible with the TSO Parallel Guide System for making repeatable square and parallel cuts in one workflow.
- Anodized Blue: Provides a beautiful, durable, and non-marking finish.
See How It Works
Read our Guide Rail Square User Guide to learn about proper use and maximizing its benefits for your woodworking projects.
Trusted by Experienced Woodworkers
TSO Guide Rail Squares are highly praised by professional cabinet shops to seasoned woodworkers and discerning hobbyists. Here’s what real customers have to say:
“Easy to attach, solid & square!” – Wallace, Feb. 2024
“Very precise and worked perfect right out of the box.” – Ronnie, Jan. 2024
“Speechless. So simple and effective. Great design.” – Greg, Mar. 2024
“…performs as good or better than a table saw without the hassle! A portable cabinet shop!” – Ronald, Jan. 2024
“Although this was a splurge I cannot imagine not having it. Perfect every. single. time.” – Teri, Mar. 2024
“Has saved me from messing up a bunch of cuts. Would highly recommend.” – Gary, Aug. 2023
“Love the ‘quick connect' feature.” – Bryan, Oct. 2024
Compatible Accessories
- Protect your Investment: Store two TSO Guide Rail Squares in a Systainer Foam Insert compatible with our custom TSO Systainer³ M 112.
- Expanding the Reference Edge: Attach our Angle Accessory for a deeper (or longer) reference edge. Perfect for cutting rounded profiles.
- Make Perfectly Parallel Rip Cuts: Attach the TSO Parallel Guide System to completely eliminate the need to measure and mark before most cuts.
- Secure Your Work: With Axminster guide rail clamps.
Guide Rail Squares Fitting Other Brands
- GRS-16 PE D: Fits DeWalt
- GRS-16 PE K: Fits Kreg ACS
- GRS-16 PE R: Fits Ridgid
- GRS-16: Fits Festool, Milwaukee, Makita, Powertec, Triton, WEN
Technical Details
- Dimensions: 15.2 x 6.0 x 1.4 in. (386 x 152 x 36 mm) - click here for dimension drawing
- Weight: 1.9 lbs (862 g)
- Material: 6061-T6 aluminum, anodized, 5/8 in. (15 mm) thick
- Compatible Guide Rails: Fits Festool, Milwaukee, Makita, Powertec, Triton and WEN.
- Not compatible with Festool HK 55 Carpentry Saws including the FSK 250, FSK 420 and FSK 670.
- Not compatible with Bosch, DeWalt, Ridgid or Kreg tracks. (See other models.)
- 5-Year Warranty: Your TSO Guide Rail Square is guaranteed to be free of defects in materials or workmanship.
- Patented Innovation: Protected by U.S. patents 10,363,681; 10,434,678; 12,017,318 and Canadian patent 2,994,319.
- Made in the USA
Documentation

Videos
-
Upgraded GRS-16 PE v2 Guide Rail Square with Faster, Drop-on Attachment
In just seconds, transform your Festool, Milwaukee, and Makita...
-
Cross-Cutting with the GRS-16 and TSO Parallel Guide System
Here's a compact and precise way to achieve repeatable, identi...
-
Track Saw Guide Rail Square - Presenting the GRS-16 PE
In just seconds, transform your Festool, Makita or Triton bran...
-
TSO Products GRS-16 Guide Rail Square. Quick review.
TSO Products sent me the GRS-16 guide rail square and asked me...
-
New Release: GRS-16 Track Square
Damion Fauser, furniture designer/maker and Wood Review author...
-
GRS-16 Track Saw Guide Rail Square Review
Looking for a quick and accurate way to make square cuts with ...
-
One month review of my TSO Products GRS-16
I found thus company on the internet while searching for other...
-
Testing the TSO GRS-16 PE Square with the FESTOOL FS1400 Guide Rail
The friendly people at TSO send me their TSO GRS-16 PE. I cut...
Warranty & Returns
339 Reviews
-
parallel edge rail
I wish it came with a little piece of metal to hold the guide even with the material being cut.
-
GRS-16 PE v2 Parallel Edge Guide Rail Square
This is a beautiful guide rail square. The machining is top notch, the spring clamp holds strong, the edges are smooth and rounded and best of all...it's dead on 90°!! I do wish that it had a dovetail to connect it to the guide rail simply because it makes it a lot easier to attach and remove from the rail with one hand. All in all...I love this square and I've dedicated it to stay in the shop to make perfectly square cabinets. Would buy it again...and I might even do that so I have a back up!!
-
Guide rail square
I took this out of the box, attached it to my Festool guide rail and made the squarest cut that I could measure.
-
Better than I could of imagined
I was concerned how accurate it would be but after using it now for a few weeks it has been dead accurate everytime perfectly square my quality has improved and it has also increased my speed greatly. Can’t recommend enough
-
TSO track saw guide rail square
Extremely well made and perfectly accurate. Has drastically improved my speed and accuracy.