Proto J5441r8sae 1/2" Drive Advanced Hex Bit Socket Set 5/16" Thru

1/2" DRIVE. Rounded Bolt Removal Technology (RBRT™) designed to prevent the rounding of hex fasteners. Anti-slip dual-directional hex driver is effective at removing compromised hex fasteners. S2 tool steel bits are precision machined for use on standard or compromised hex fasteners.