The BikeMaster® Threaded Inserts Kit comes complete with two high-speed steel drill bits for M8 and M6 holes. Two HSS taps in the most popular M8 x 1.25 and M6 x 10 sizes. The kit also features inserter tools, tab removers, and a ratchet T-wrench to use with inserter tools. There are three different lengths of M6 and two different lengths of M8 threaded inserts.