Socket system features the Pass-Thru™ drive system that links drive tools and sockets Broached for use with 1/4" and 3/8" conventional square drive ratchets Reach fasteners in tight spaces with ease Bits made of S2 steel for strength and durability Bright, full polish chrome finish easily wipes clean and resists corrosion Hard stamped size markings Includes blow mold case for storage and organization Drive Size 1/4"/3/8" Includes Hex sizes 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm, Phillips® sizes #1, #2, #3, Slotted sizes 1/8", 3/16", 1/4" & Torx® sizes T8, T10, T15, T20, T25, T27, T30, T40, T45, T47, T50, T55 Manufacturer's Warranty Full Lifetime No. of Pieces 39 Tip Style Hex/Phillips/Slot/Torx®