You'll never have to worry about having the right t-bolt knob or insert for your project with the 149-Piece ¼-20 hardware kit. This kit includes a variety of ¼-20 T-Track hardware including T-bolts, star knobs, and threaded inserts, all stored in a conveniently divided storage case. This hardware was specifically chosen to be compatible with standard ¼-20 T-tracks found on most woodworking equipment like router tables and drill presses. Not only is this kit perfect for making custom jigs and fixtures but is also a great source of mounting hardware for woodworking accessories like feather boards, miter gauges, and stop blocks.