8pc IMPERIAL Hex Key Socket Bit Set3/8" Square Drive Damaged and Stripped BoltsProfessional heat treated Chrome Vanadium steel sockets. 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 railFeatures: Professional heat treated Chrome Vanadium steel sockets. 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. Sizes: 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" 3/8". Supplied on a metal socket rail. Lifetime guarantee*. Specification: Contents -1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8" Drive -3/8"Sq Minimum Length -48mm Further Information We sell a wide variety of tools and workshop equipment for both the DIY and Professional markets. Alias: ys01558