Product description Socket wrench inserts made of chrome vanadium steel 1 ratchet 12.7 mm (1/2"), 24 teeth, one-hand reversible, quick-acting ejector and 2-component handle 18 socket wrench inserts 12.7 mm (1/2") sizes 10-11-12-13-14-15-16-17-18-19-20-21-22-23-24- 27-30-32 mm 1 extension 12.7 mm (1/2") x 250 mm 1 Adapter 12.7 mm (1/2") internal square to 12.7 mm (1/2") external square, with 12.7 mm (1/2") extension can also be used as a T-sliding handle 4 Allen keys, sizes 5-6-8-10 mm