Drive Size: 1/2" square drive (compatible with all standard 1/2" ratchets, breaker bars, and torque wrenches).
Socket Material: Fully polished chrome vanadium steel (Cr-V) for excellent corrosion resistance and wipe-clean maintenance.
Bit Material: Pressed-in, high-alloy S2 steel bits, induction hardened for extreme durability and anti-cam-out performance