This comprehensive 75-piece bit set includes Ribe, Hex, Spline, Torx, and Security-Torx bits. The set contains 2 x 1/2" Drive x 10mm adapters and 1 x 3/8" Drive x 10mm adapter. It also features 8 pieces of 30mm Ribe bits (R5, 6, 7, 8, 9, 10, 12, 14) and 8 pieces of 75mm Ribe bits (R5, 6, 7, 8, 9, 10, 12, 14). Additionally, there are 7 pieces of 30mm Hex bits (sizes 4, 5, 6, 7, 8, 10, 12).