INCLUDES: 10 Piece T-Track Knob Set with Thru Hole Knobs, ¼”-20 Hex Head Bolts and Washers FUNCTION: With t track knobs and bolts like these, you can build your own jigs and fixtures and secure or attach them throughout your shop. Works with both ¼” mini t-track and universal t-track. APPLICATIONS: Replacement knobs for your t-track assemblies, jig and fixture hardware and other general purpose woodworking applications that accept standard ¼ inch hex head bolt, including t-track assemblies, router bit guards, flip stops, stop blocks, miter gauge fences, feather boards, router tables, drill press, and other workshop accessories PREMIUM DESIGN: T track knobs with ¼”-20 Hex Head Bolts feature a black, thermoplastic construction with a triple point profile and comfortable grip, matte black finish with a thru hole to accommodate the included hex bolts SPECS: 1/4” x 20 tpi steel threads through hole knobs | Bolt Head across the flats 7/16” or .440 | Washer outside 5/8” or .629 | Washer inside 1/4” or .258 | Hex Bolts are standard 1/4 x20 x 1-1/2”, Weight: 0.56 Pounds, Manufacturer: POWERTEC