Special features Includes various sockets, ratchet, extension bar and adapters Handy spark plug wrench Suitable for use with both 1/4" and 3/8" accessories Plastic washer for ratchet for extra protection Technical data Ratchet 9.53 mm (3/8") Sockets 9.53 mm (3/8"): 17, 14, 13, 12, 11, 10, 9 Sockets 6.35 mm (1/4"): 8, 7, 6, 5.5, 5, 4.5, 4 Spark plug wrench 21 mm Extension bar 70 mm Socket wrench handle 6.35 mm (1/4") Adapter 9.53 mm (3/8") to 6.35 mm (1/4") Plastic washer for ratchet Included as standard Size: 1/4" and 3/8"