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TSO Products

GRS-16 PE v2 Parallel Edge Guide Rail Square

(341 reviews) Write a Review
SKU:
61-519
TOP SELLER
  • The ultimate accessory for Festool, Makita, Milwaukee, Powertec, Triton, and WEN track saw systems.
  • Achieve perfectly square cuts in record time with the GRS-16 PE v2 Guide Rail Square.
  • The GRS-16 PE is now compatible with Milwaukee's M18 FUEL plunge saw!
  • Once attached, the GRS-16 PE v2 becomes a rigid part of your guide rail.
  • High strength, custom draw latch with dipped coating protects your guide rail.
  • Your guide rail is completely supported by the full-height, precision machined mating edge of the GRS-16 PE v2.
  • Perfectly balanced, the GRS-16 PE v2 is suitable for use off the front or back edge of the workpiece, unsupported.
  • Once clamped, just slide the assembly up to your workpiece and start making square cuts.
  • New in v2: insert square at any point along the rail, avoiding clamps, hose deflectors and other accessories occupying the guide rail's bottom T-slot.
  • Clamping slots on both reference edges of the GRS-16 PE accommodate T-track clamps such as Festool's Screw Clamps and Quick Clamps.
  • The GRS-16 PE v2 can square off the front or back of your workpiece.
  • Use the GRS-16 PE to square off either the front or back of your workpiece.
  • Cut down the bottom of doors with ease using the GRS-16.
  • Use the GRS-16 PE v2 in place of a Guide Rail Adapter with the TSO Parallel Guide System.
  • Compatible with the TSO Parallel Guide System. Shown here with TPG-20 track.
  • Compatible with the TSO Parallel Guide System.
  • Get perfectly parallel, repeatable cuts when you add the TSO Parallel Guide System to your Guide Rail Square.
  • Extend your guide rail square's effective reference edge thickness and length with our optional Angle Accessory.
  • Two guide rail squares fit neatly into a Systainer with our custom foam insert (sold separately).
  • Use the GRS-16 with the Parallel Guide System Gen 2, using our Guide Rail Square Connector (both sold separately).
  • Still proudly made in the USA!
$199.95
Frequently bought together:

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.

PRO TIP PRO TIP #1: Never use the factory edge of your material as a reference to your Guide Rail Square. For maximum accuracy, start by removing a thin slice of material to establish a perfectly straight reference edge. Learn more.

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

PRO TIP PRO TIP #2: Making longer cuts? Consider the TSO Parallel Guide System for longer rip cuts of 4 to 8 feet.

Compatible Accessories

Guide Rail Squares Fitting Other Brands

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

Proudly Made in the USA

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Videos

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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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341 Reviews

  • 5
    Quality out of the box.

    Posted by Joseph Howser on 4th Jul 2026

    I seen your product on 731 Woodworks on YouTube. I just recently bought a track saw for my cabinet shop and needed a square for it. TSO square is quality from the start. It has saved us time which saves us money. Highly recommend the TSO square

  • 3
    Didn’t solve my problem

    Posted by Andy Negrin on 29th May 2026

    This square is not great for the Festool track. There’s too much play at the opposite end of the track which has result in non square cuts. It also makes the clamping harder.

  • 5
    parallel edge rail

    Posted by Paul Battle on 20th May 2026

    I wish it came with a little piece of metal to hold the guide even with the material being cut.

  • 5
    GRS-16 PE v2 Parallel Edge Guide Rail Square

    Posted by Jason Gadsky on 8th May 2026

    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!!

  • 5
    Guide rail square

    Posted by Ardea Woodworks on 7th May 2026

    I took this out of the box, attached it to my Festool guide rail and made the squarest cut that I could measure.

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