171 Piece SetIncludes: 1/4" Drive Shallow Sockets (3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm And 13mm), 3/8" Drive Shallow Sockets (1/4", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 17mm And 19mm), 3/8" Drive Deep Sockets (3/8", 7/16", 1/2", 9/16", 10mm, 12mm, 13mm And 14mm), 1/2" Drive Shallow Sockets (1/2", 9/16", 5/8", 11/16", 3/4", 7/8", 14mm, 15mm, 17mm, 18mm, 19mm And 21mm), 1/4", 3/8" And 1/2" Ratchet Drive Handles, 3/8" X 3" Extension, 5/8" And 13/16" Spark Plug Sockets, Combination Wrenches (5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 8mm, 10mm, 12mm, 13mm, 14mm And 15mm), Magnetic Tipped Screwdriver, 2-1/4" Bit Driver Extension, 40 - 1" Insert Driver Bits (Phillip, Slotted, Torx, Pozi, Square And Hex), Nutdrivers (5/32", 3/16" (2)1/4", 9/32", (2)5/16", 11/32", 3/8", 7/16", 5mm, 6mm, 7mm, 8mm, 9mm, (2)10mm, 11mm And 12mm), SAE & Metric Hex Keys (1/16", 5/64", 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm And 6mm), 3" Magnetic Parts Tray And Storage CaseAll Sockets Are 6 PointDyna-Drive Torque System Delivers 20% More Torque, Eliminates Socket And Wrench Slippage And Prevents Damage To Fasteners45 Tooth Ratcheting Handle Requires Only 8 Degrees Of Movement To Utilize RatchetHigh Polished Chrome Vanadium Steel ConstructionHigh-Density Polyethylene Case Is Strong And Durable And Keeps Tools OrganizedNot For Use With Pneumatic And Electric Impact WrenchesMirror Polish For Easy Tool Cleanup After UseMeets Or Exceeds ANSI Standards