This Wiha Torx driver set offers a versatile selection of Torx head bits in a convenient holder case. They have an L-Key design and include a T6, T7, T8, T9, T10, T15, and T20. Each tool has a black coated finish for corrosion protection. Torx bits offer a 100% improvement in drive performance over other bit driver systems, virtually eliminating screw head cam-out.