Check the listing for details. DCT 3 Star Knobs Kit 10pk 1/4in-20 Threaded Knob Set with Jig Knobs and Bolts. Condition: New. Listed at 14.99 USD. Our eBay Store About Us Contact Us Add to Favorite Sellers DCT 3 Star Knobs Kit 10pk 1/4in-20 Threaded Knob Set with Jig Knobs and Bolts 14.99 Complete your DIY projects with the DCT 3 Star Threaded Knobs Kit Washer and Bolt 10 Pack is your solution. To use on your T-track, insert the bolt into the T-slot with the screw facing upwards, place the washer on the threaded bolt, then thread the T knob onto the bolt to lock the entire unit in place on your T-track. This tool knobs kit can be used in furniture decoration, electronic equipment, mechanical equipment, and more without hurting your fingers with the plastic knobs. This T track hardware kit includes ten (1/4”-20) 3-star thru knobs with bolts and washers to best suit your needs. Many 3/4in wide x 3/8in deep (19.1 x 9.5mm) T-tracks will also accept this knob set and use the included T-bolts. Warning: This product contains chemicals known to the state of California to cause cancer and birth defects or other reproductive harm. Product Details [Adjust and Tighten]: The DCT 3 Star Knob 10 pack T Track Knobs Kit is the perfect package of screw-on clamping knobs that can be used on your saw fence, drill press, lathe, routing jig, fixture, feather board, or anywhere else that a 1/4-Inch-20 internal thread is required [Perfect Size]: T track knob threading has 1/4-inch (6.4mm) diameter and 20 threads per inch (if you turn a nut 20 revolutions it will move 1 inch); Knobs have a 2in diameter and 1in height (5.1 x 2.5cm) [Easy to Use]: Ergonomic design of this plastic knob set allows for easy adjustment and tightening with maximum control and agility without the use of additional tools; Works with any material that is less or equal to 1-inch in thickness or any T-track that accepts standard 1/4-inch bolt heads [Built to Last]: T knobs package includes plastic knobs that are constructed from polypropylene plastic with molded-in brass insert that will not strip; Bolts and washers constructed from steel [Contents]: Tightening knob kit includes (10) T track knobs, (10) bolts, and (10) washers for your convenience; Bolts are 1/4”-20 threading and measure 1.5 inches (3.81cm)