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Guide Rail Squares

Guide Rail Squares

Square Cuts Made Fast & Easy with Your Track Saw

Choose your GRS-16 Guide Rail Square based on its compatibility with your track saw system:

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  • Achieve perfectly square cuts in record time with the GRS-16 PE v2 Guide Rail Square. The fastest, easiest and most accurate way to square cuts with your FESTOOL, MILWAUKEE, MAKITA or POWERTEC track saw guide rail.

    TSO Products

    GRS-16 PE v2 Parallel Edge Guide Rail Square

    $189.95
    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...
    Sku: 61-519
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    $189.95
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  • Break down sheet goods with unmatched speed and accuracy with your track saw. The GRS-16 Guide Rail Square is the easiest, fastest and most accurate way to square cuts with your Festool, Makita or Triton track saw.

    TSO Products

    GRS-16 Guide Rail Square

    $179.95
    Original, Patented Guide Rail Square for FESTOOL®, MAKITA®, Milwaukee®, POWERTEC® & TRITON® Introducing the newest version of the best-selling guide rail square on the market: the GRS-16. Incorporating a number of user-driven...
    Sku: 61-517
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    $179.95
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  • Perfectly balanced, the GRS-16 PE R can comfortably hang off your guide rail without fear of tipping or becoming unwieldy. CNC machined to perfectly balance on your Ridgid guide rail.

    TSO Products

    GRS-16 PE R Guide Rail Square for RIDGID Track Saws

    $189.95
    Fast, Easy & Repeatable 90° Cuts with Your RIDGID Cordless Track Saw Watch this video for an introduction to our GRS-16 PE R guide rail square for RIDGID track saws. Speed up the process of breaking down sheetgoods with your RIDGID® track saw...
    Sku: 61-573
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    $189.95
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  • Perfectly balanced, the GRS-16 PE D can comfortably hang off your guide rail without fear of tipping or becoming unwieldy. The bestselling guide rail square has now been adapted to fit the DeWalt 60V MAX brushless track saw system!

    TSO Products

    GRS-16 PE D Guide Rail Square for DeWalt Track Saws

    $169.95
    A Guide Rail Square Built for DeWalt's 60V MAX Cordless & Corded Track Saws Watch this video for an introduction to our GRS-16 PE D guide rail square for DeWalt track saws. The proven design of the GRS-16 guide rail square has now been adapted to fit...
    Sku: 61-511
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    $169.95
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  • 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!

    TSO Products

    GRS-16 PE K Guide Rail Square for Kreg

    $184.95
    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...
    Sku: 61-459
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    $184.95
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  • Depiction of the dual, stackable foam inserts. Depiction of the dual, stackable foam inserts with GRS-16 and GRS-16 PE

    TSO Products

    Systainer Insert Set for GRS-16 PE R Guide Rail Square

    $39.95
    Total Storage & Protection for Your GRS-16 PE R (& All GRS-16 Models) This two-piece Systainer® insert provides storage for up to two guide rail squares in a single Systainer³ M 112 enclosure! These inserts are compatible with all...
    Sku: 61-586
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    $39.95
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  • Depiction of the dual, stackable foam inserts. Depiction of the dual, stackable foam inserts with GRS-16 and GRS-16 PE

    TSO Products

    Systainer Insert Set for GRS-16 Guide Rail Squares

    $39.95
    Total Storage & Protection for Up to Two Guide Rail Squares Designed specifically for our newer (post-October 2017) GRS-16 and GRS-16 PE guide rail squares, our Dual FoamPac Insert enables storage of up to two guide rail squares in a single...
    Sku: 61-244 A
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    $39.95
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  • The Long Angle Accessory is shown here, attached to a GRS-16 PE. Use it to effectively extend the reference edge of your guide rail (both length and depth projection). Use two Angle Accessories to transform your MTR-18 Precision Triangle into a massive clamping square.

    TSO Products

    Angle Accessory

    $30.95 - $31.95
    A Handy Add-On for the GRS-16, MTR-18 and PTR-18 Compatible with our GRS-16 and GRS-16 PE Guide Rail Squares along with MTR-18 and PTR-18 Precision Triangles, the Angle Accessory extends the usefulness of your tools. When used with the...
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    $30.95 - $31.95
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  • Axminster Professional Quick Lever Guide Rail Clamp - 160x60mm Axminster Professional Quick Lever Guide Rail Clamp in guide rail.

    Axminster

    Axminster Quick Action Guide Rail Clamp

    $19.95
    A Quick Clamp Built to Last This quick action clamp features a specially designed head that fits into the slot on the underside of a track saw guide rail to secure it firmly in place for a more accurate cut. It is compatible with Festool FS, Makita,...
    Sku: 105258
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    $19.95
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  • Axminster Professional Quick Lever Guide Rail Clamp - 160 x 60mm Axminster Professional Quick Lever Guide Rail Clamp in guide rail.

    Axminster

    Axminster Guide Rail Ratchet Clamp

    $49.95
    A Ratchet Clamp Built to Last This quick action clamp features a specially designed head, or spigot, that fits into the slot on the underside of a track saw guide rail to secure it firmly in place for more accurate cuts. It is compatible with Festool FS,...
    Sku: 103061
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    $49.95
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  • Axminster Professional Guide Rail Clamp Axminster Professional Guide Rail Clamp in Festool guide rail.

    Axminster

    Axminster Guide Rail Screw Clamp

    $25.95
    A Screw Clamp Built to Last This quick action clamp features a specially designed head, or spigot, that fits into the slot on the underside of a track saw guide rail to secure it firmly in place for more accurate cuts. It is compatible with Festool FS,...
    Sku: 103060
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    $25.95
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  • M6 Knob Set with Centering Spacers M6 Knob Set with Centering Spacers

    TSO Products

    M6 Knob Set with Centering Spacers

    $18.95
    For use with the TPG Parallel Guide System but also compatible with other TSO woodworking accessories, this extra M6 knob set features the same comfort-grip knobs and custom CNC-machined centering spacers found in our TPG kits. This spare knob set...
    Sku: 61-427 A
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    $18.95
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  • 5mm Hex Driver

    TSO Products

    5mm Hex Driver

    $6.95
    This quality 5mm ball-end hex driver tool can be used to secure our Power-Loc bench dogs. We also have a 3mm hex driver available.
    Sku: 61-464
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    $6.95
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  • 3mm Hex Driver

    TSO Products

    3mm Hex Driver

    $5.95
    This quality straight 3mm hex driver can be used to secure hardware to our GRC-12 self-aligning guide rail connectors, precision triangles, and parallel guide systems. Note: This was previously a ball-end hex driver, but we have changed to a straight-end...
    Sku: 61-463
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    $5.95
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The Original, Patented Guide Rail Square

Since its initial release over seven years ago, the GRS-16 Guide Rail Square has become an essential companion to the track saw for two big reasons: accuracy and efficiency. With the GRS-16, you can break down sheet goods much faster while ensuring perfect 90° cuts every time. So what makes the GRS-16 the best tool of its kind?

  • Born Square: All GRS-16 squares feature a single-piece design that self-squares to 90° with no adjustments needed (and therefore, no points of failure in the future)
  • Rock-Solid Attachment: Super strength, custom draw latch features a resilient coating to grasp the edge of your guide rail and prevent marring
  • The Perfect Form Factor: Lightweight design that balances perfectly once attached to your guide rail, and compact enough to fit into a Systainer (with optional Foam Insert available)
  • Expandable: Accessory mounting holes enable connection to the TSO Parallel Guide System and Angle Accessory
  • Wide Compatibility: We now offer a GRS-16 model compatible with most popular track saw systems, including Festool, Milwaukee, DeWalt, Makita, Ridgid, Kreg ACS and Triton

Simple, Automatic Accuracy

Before the GRS-16, methods for squaring a track saw relied on the loose-tolerance T-slot found in every guide rail. To overcome this inherent inaccuracy, woodworkers relied on a separate reference square, plus a combination of loose parts like T-bars, hex bolts, and knobs. These shop-made solutions would often quickly fall out of square, requiring constant vigilance and recalibration to maintain accuracy.

The patented GRS-16 family solves this problem with a simple one-piece design that self-squares as it attaches to the guide rail. Once connected, the GRS-16 becomes a rigid extension of your guide rail, providing a precise 90° reference edge (or two, in the case of the GRS-16 PE) that won’t fall out of square over time.

Read our blog post to Learn How to Use Your Guide Rail Square.