3、Whether you're a professional or a DIY enthusiast, these knobs are easy to use, remove and require no tools. Din 4 Viscosity Cup Conversion Chart 【Application】: Insert the head of the T-bolt into the track with the washer and align it with the star knob threads. 【Package Includes】10 star knobs, 10 T-bolts, 10 washers, 1 storage box This exclusive pack of 4 contains knobs, bolts and washers arranged together to help secure and enhance your jigs, fixtures and t-track accessories. They are... T Track T-Track Knob Kit 7-Star 5/16 Threaded Knob, Bolts And Washers T Bolts For T Track 4、Used for t-track accessories, horizontal featherboards, miter gauge fences, stop blocks, guards and attachments, woodworking jigs and fixtures, etc. POWETEC 71481 T Tack Knob Kit w/ 7 Sta Knob, 1/4-20 【Material】 DNXBTSTW star knob is made of plastic and brass nut injection molding, T-bolt is made of carbon steel hot-dip galvanized, the washer is made of 304 stainless steel, beautiful and durable 【Specifications】: star knob 1.22 inch diameter, 0.44 inch high (31mmx11.3mm) 1/4“ washer, T-bolt 1/4”-20x2-9/16 inch fully threaded Package Quantity: 10 pcs 1/4-20 6-star knobs, 10 pcs 1/4-20x2-9/16 in. t-bolts, 10 pcs 1/4 in. stainless steel 304 washers, 1 storage box. also an ideal replacement for similar sized handles, t-knobs, and clamping devices, very versatile and looking forward to more of your use discoveries.