We offer Rock Solid mini kits that include inserts and one installation tool, and complete kits that include one drill bit, one tap, inserts, and an installation tool. Whether you are a professional or a do-it-yourselfer, Chrislynn has what you need to complete your thread repair needs. Looking for a Rock-Solid master kit? We offer master kits in thin or heavy-duty wall. Kits include an array of insert sizes, installation tools, taps, and drill bits. Rock Solid threaded inserts are used to quickly repair stripped, damaged, or worn-out threads. Rock Solid threaded inserts are also used in original equipment, offering superior strength in softer metals such as magnesium or aluminum.