The Socket Wrench is made of drop forged steel, strong and durable. It comes with 1/4" and 3/8" drive socket set, the socket sizes are 4, 4.5, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17 and 19mm. It also has one spanner handle of 150mm, two extension bar 75mm and 150mm, one adapter 1/4"(m) *3/8"(f), one reversible ratchet handle 200mm and one spark plug socket