The DEWALT DWMT72164 156 pc mechanics tool set features deep laser etched markings for easy socket size identification. The knurled beauty rings provide a non-slip gripping surface, with a low profile directional lever that helps reduce catch points and for easy one-hand operation. This set offers a 72-tooth gear system for high torque ratcheting. It also features a 5-degree Arc swing and slim head design for maneuverability in constricted areas. A durable molded case allows for easy storage and tool protection. Backed by DEWALT limited lifetime warranty. This set includes: set includes:22 - 1/4" drive sockets - 6 point, SAE- 5/32, 3/16, 7/32, 1/4, 9/32, 5/16,11/32, 3/8, 7/16,1/2, 9/16, mm- 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 20 - 1/4" drive deep sockets - 6 point, SAE- 3/16, 1/4, 5/32, 9/32, 5/16,11/32, 3/8, 7/16, 1/2, mm- 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 1 - 1/4" drive pear head ratchet, 3 - 1/4" drive extension bar : 3, 6, 10", 1 - 1/4" drive Universal joint, 1 - 1/4" drive F x 3/8"m adapter, 22 - 3/8" drive sockets - 6 point, SAE- 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4,13/16, 7/8, mm- 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22 - 3/8" drive deep sockets - 6 point, SAE- 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4,13/16, 7/8, mm- 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 1 - 3/8" drive pear head ratchet, 3 - 3/8" drive extension bar : 3, 6, 10", 1 - 3/8" drive Universal joint, 1 - 3/8" drive F x 1/4"m adapter, 3 - 3/8" drive spark Plug sockets - 6 point - 5/8, 3/4, 13/16, 9 - 3/8" drive socket bits-hex, SAE- 5/32, 3/16, 1/4, 5/16, mm- 4, 5, 6, 7, 8, 8 - 3/8" drive socket bits-torx, T10,T15, T20,T25, T27, T30, T40, T45, 10 - combination wrenches, SAE- 3/8, 7/16, 1/2, 9/16, 5/8, mm- 10, 11, 13, 14, 15, 28 - hex keys.