Sealey's AK65601 8pc 3/8"Sq Drive Lock-On Hex Socket Bit Set is an eight-piece hex socket bit set.One of a comprehensive range of Premier Hand Tools, suitable for daily professional use.Professional heat treated Chrome Vanadium steel sockets.S2 Steel hex bits with a zinc phosphate finish.Removes rusted, damaged and severely rounded hex head fasteners with ease.Patented twist design grips tighter as they turn.Prevents fasteners from rounding.Supplied on a metal socket rail.Lifetime guarantee*.Specifications:Contents:3, 4, 5, 6, 7, 8, 9, 10mmDrive:3/8"SqMinimum Length:48mm