Raptor Supplies offers a complete line of thread insert tools from Chrislynn, Heli-Coil, Recoil and Grainger. For installing threaded inserts into a pre-drilled hole, a wide range of insert installation tools, STI plug taps, tang breaking tools and bushings are also available. These tools feature threading on the external surface to create a secure connection with the inserts and a handle for easy manoeuvring inside the drilled hole. Screw thread insert (STI) plug taps are tapping tools used to create a threaded hole with an oversized internal thread for accommodating a helical screw insert. For different applications, these insert tools are offered in a broad range of thread sizes and styles, materials and drill sizes. For installing self-locking or knife thread inserts, steel power drivers are also available in different hex shank sizes.