Lisle Brake Caliper Torx Bit Set - 27740 is a set of 8 bits designed to fit Torx fasteners on brake calipers. The bits are made from heat-treated S2 steel for durability and strength. The set includes a T-20, T-25, T-27, T-30, T-40, T-45, T-50 and T-55 bit. The bits are stored in a plastic holder for easy storage and transport.