EXTENDED WORKING LENGTH: This Varijig system features two lengths of extrusion with a jointing piece, providing a maximum working length of 100 inches for versatile use. COMPATIBLE WITH 1-1/4 INCH MATERIALS: The maximum material clamp thickness for this straight guide is 1-1/4 inches, accommodating various project needs. ANTI-SLIP ADJUSTABLE FRICTION WASHER: Equipped with adjustable friction washers on clamps, the guide system prevents clamps from sliding too freely, ensuring a secure grip. DUAL METRIC/IMPERIAL SCALE: One extrusion of this router accessory tool offers a dual metric/imperial scale for precise measurements, enhancing the accuracy of your projects. MULTI-TOOL COMPATIBILITY: The Trend Varijig Straight Guide System is compatible with routers, circular saws, and jigsaws, making it an essential addition to your workshop.