OOX2331 Features: * Through-hole design: simply pop the old bit out and insert a new replacement bit * New bit holder design is 9 times stronger and helps prevent the bit from slipping out of the socket while working * High strength, S2 steel bits Color/Finish: * SuperKrome® finish provides long life and maximum corrosion resistance Dimensions: * 6 Piece 3/8"" Drive Metric Long Hex Bit Socket Set Warranty: * Lifetime warranty6 piece set is made in the U.S.A. Bit sockets feature SK"s high polish SuperKrome® finish, which provides for long life and maximum corrosion resistance. Through-hole design makes it easier to replace worn or broken bits. Bits are manufactured to rigid standards using high strength S2 steel. Sizes include: 4mm, 5mm, 6mm, 7mm, 8mm, 10mm Long Hex Bit Sockets. Packaged on a plastic rail. * Sets & Kits do not have warranty/ see individual pcs for details