Product Description
Introducing the GRS-16 PE
Upgraded June 2018
Patented precision guide rail square for FESTOOL®, MAKITA® & TRITON® track saw guide rails
Introducing the newest version of the best-selling guide rail square on the market: the GRS-16 PE. Like its sibling GRS-16, the GRS-16 PE is designed to make it much faster to achieve dead square cuts with your FESTOOL, MAKITA or TRITON track saw—but adds a second "parallel edge" to permit squaring against the front and back of your workpiece.
The Original (& Patented) Guide Rail Square
Thanks to feedback from the TSO user community, the GRS-16 PE embodies a number of requested features and refinements:
- Lighter than its predecessor despite being CNC machined from 25% thicker aluminum, with a mating vertical edge that now perfectly matches the height of your guide rail extrusion for maximum support and engagement
- Now fits in a Systainer—see our new Dual FoamPac Systainer Insert
- Latch hook now features a resilient coating to grasp and protect the edge of your guide rail
- Reshaped T feature lead-in makes it even easier to install onto your guide rail
- Additional accessory mounting provisions included—see our new Angle Accessory and stay tuned for more exciting new products building off the GRS-16 platform
- Adjustments to key tolerances to better accommodate production variances observed in guide rail manufacturing
- Fasteners used on all TSO brand tools are now metric for worldwide availability
- New, fully recyclable all-corrugated white packaging
See How It Works
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 is completely self-contained and self-aligning, thanks to an innovative, high strength integral draw latch mechanism. Simply slide the GRS-16 PE 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. For this reason, we've designed notches in both reference edges of the GRS-16 PE to accommodate popular clamps like the Festool Screw Clamp or Quick Clamp.
Built for a Lifetime of Service (or Longer)
The GRS-16 PE is precision CNC machined from a single piece of 5/8" (15 mm) thick 6061-T6 aluminum and then anodized for a non-marring, high durability finish. The high-strength draw latch is built from stainless steel—to resist rust and pitting over time. Despite its high clamping strength, 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 is made in the United States, and comes with our lifetime warranty.
So Which Tool is Right for You?
If you need the ability to reference off the front and back edge of your workpiece, select the GRS-16 PE (the product you see on this page). If you want the absolute smallest and lightest form factor and anticipate using the square for conventional cuts referencing the front edge of your workpiece, choose the GRS-16. Can't decide? Check out the Combination Set for the best of both worlds:
- Allows you to square both ends of longer rails for greatest accuracy
- Keep one in the truck and one in the shop
- Special savings when purchased together as a Combination Set
New for June 2018
We have added the ability to connect the GRS-16 PE to the MFT/3 guide rail hing bracket! The time-consuming re-squaring process of the MFT guide rail is now a thing of the past with the newest GRS-16 PE. Rail squareness is now assured, unaffected by varying material thickness and rail height adjustment. The inspiration for this improvement came from customer Simon H., a Festool MFT/3 user in the UK. We listened and acted on it. Thank you, Simon!
We engineered this feature to keep the kerf line in exactly the same location as your standard MFT/3. You can quickly change back to the original MFT/3 arrangement any time.
GRS-16 PE connects perfect square to MFT/3
It does not get any more accurate than this...
Already own a GRS-16 PE? We've got more good news!
Notice the the M6 tapped holes in the right side – they line up and match the MFT/3 hinge bracket mounting holes. Connection and removal is a snap. In keeping with our policy of making new features backward compatible whenever practical, you can add this feature to your existing GRS-16 PE tool using instructions and a pattern available for free download from our “Plans” section right now. This feature is not technically possible for use on the GRS-16.
What About the GRS-16?
If you want the absolute smallest and lightest form factor and anticipate using the square for conventional cuts referencing the front edge of your workpiece, choose the GRS-16. Can't decide? Check out the Combination Set for the best of both worlds:
- Allows you to square both ends of longer rails for greatest accuracy
- Keep one in the truck and one in the shop
- Special savings when purchased together as a Combination Set
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 (Both): FESTOOL, MAKITA and TRITON (not compatible with FESTOOL HK 55 Carpentry Saws including the FSK 250, FSK 420 and FSK 670; not compatible with BOSCH or DEWALT tracks)
- Clamping Mechanism: Over center draw latch (304 stainless steel) with compensating spring; secured with M4x0.7-10 stainless steel socket head screws
Videos
Quick video walkthrough of the original GRS-16 PE.
Special thanks to Eric at The Poplar Shop for his unexpected video review of the original GRS-16!
Guide Rail Square Comparison Table
| GRS-16 Guide Rail Square |
GRS-16 PE Guide Rail Square |
GRS-16 & GRS-16 PE Combination Set |
|
 |
 |
 |
|
| Best for… | Squaring your guide rail by referencing off the front edge of your workpiece | Squaring your guide rail by referencing off either the front or back edge of your workpiece | Squaring your guide rail by referencing both the front and back edge of your workpiece at the same time; ideal for longer guide rails |
| Price | $159.95 | $179.95 | $319.95 |
| Optional Accessories | FoamPack Storage Insert for SYS-1 T-LOC Systainer Angle Accessory |
FoamPack Storage Insert for SYS-1 T-LOC Systainer Angle Accessory |
FoamPack Storage Insert for SYS-1 T-LOC Systainer Angle Accessory |
Got a suggestion to make this page even better? Your feedback and suggestions are always welcome!
The TSO Products GRS-16 is protected by US Patent 10,363,681 and Canadian Patent 2,994,319.
TSO Products reserves the right to change specification of products without notice. Standard equipment and specifications may differ from country to country. Some products published here may not be sold in your country. Printed materials may not be current, so always check the TSO Products website for the most up-to-date product information.
FESTOOL is a Trademark of FESTOOL Tool Technic Tanos.
GRS-16™ TSO Products, LLC.
All Rights Reserved © 2019
Other Details
We stand by the GRS-16PE with a lifetime warranty!Product Videos
Videos Hide Videos Show Videos
-
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...
-
GRS-16
An accessory tool for track saws that gives you perfect 90 deg...
-
Track Saw Guide Rail Square - Presenting the GRS-16 PE
In just seconds, transform your Festool, Makita or Triton bran...
Custom Field
Product Reviews
93 Reviews Hide Reviews Show Reviews
-
GRS-16 PE PARALLEL EDGE GUIDE RAIL SQUARE
This tool is a godsend! It has saved me countless hours in cutting with my festool system by only requiring me to make a single mark to line up to when cutting, is deadly accurate and is as foolproof as one could ask for. I am definitely planning on getting the parallel guide attachments in the future.
-
Very accurate
Was pleasantly surprised how good this square actually works.
Right out of the box did 5 cut test(https://www.youtube.com/watch?v=oCwQn40GsVs) and the result just impressed me.
On 22” length had .003” error!!!!
-
Exactly what I was looking for.
I got bogged down in the "what if I want to do this" mentality. The truth is, for me, I typically only cut 90 degree cuts. For the few I need to do, a protractor will suffice. It's hard to make any further glowing remarks that haven't been said by others yet. My favorite thing about this tool, is that I don't have to fuss with it at all... It just works as described.
-
nelson.peebles@gmail.com
Love it. Easy to jet up and dead on accurate every time.
-
great product
I own two of these that I use when making some 9' x 3' table tops. These, in combo with
the TPG-50, an extra 50" t-track and Guide Rail Adapter for TPG Parallel Guide System help make the
process go a lot quicker and more accurately! Thanks TSO! -
tmgarbarini@gmail.com
A real time saver built to a very high standard.
-
cleverley5@gmail.com
dead on accurate and amazing out of the box. with the time saved it paid for itself within a week. i definitely recommend the tso foam and travel box to protect the square and clamping mechanism unless you intend to fabricate something similar yourself to isolate and protect the square during travel, it is made extremely well and is robust but as something you will use to make dead on square cuts i would not want it bouncing around in my truck or toolbox. -⭐️⭐️⭐️⭐️⭐️
-
GR16 Parallel Edge Guide Rail Square
This brilliantly and elegantly simple addition to a Festool Rail enables one to cut absolutely square to a reference edge with no further equipment. It is perfect for panels and sheet goods for which conventional squares do not exist as well as smaller pieces. Since it takes but seconds to attach/detach, it quickly moves between rails. The red-handled clamp locks things up securely and absolutely square within my ability to detect. The only caution I have to offer is that the GR16 forms one leg of a square that can be very short compared to the length of the other which requires attention to careful attention to placement and possible need for clamping.
-
Works like a charm
This works great!
