Sealey Deep Impact Socket Set 1/2"Sq Drive 3pc Features: Manufactured from Chrome Vanadium steel, hardened, tempered and with a phosphate finish for added corrosion resistance. Deep 6-point WallDrive® sockets allows a transfer of up to 30% more torque to the fixing. Supplied in storage case. Technical Details: • Manufactured from Chrome Vanadium steel, hardened, tempered and with a phosphate finish for added corrosion resistance. • Deep 6-point WallDrive® sockets allows a transfer of up to 30% more torque to the fixing. • Sizes: 17, 19, 21mm. • Supplied in storage case. • Lifetime guarantee*. • Model No. SX043 • Model No. SX043 Additional Information: • Manufactured from Chrome Vanadium steel, hardened, tempered and with a phosphate finish for added corrosion resistance. • Deep 6-point WallDrive® sockets allows a transfer of up to 30% more torque to the fixing. • Sizes: 17, 19, 21mm. • Supplied in storage case. • Lifetime guarantee*.