8pc METRIC Hex Key Socket Bit Set3/8" Square DriveDamaged 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 preventing 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: 3, 4, 5, 6, 7, 8, 9, 10mm. Supplied on a metal socket rail. Lifetime guarantee . Specification: Contents -3, 4, 5, 6, 7, 8, 9, 10mm 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: ys01556 Loops 8pc METRIC Hex Key Socket Bit Set - 3/8" Square Drive - Damaged & Stripped Bolts