High quality chrome vanadium steel,drop forged and hardened treated. The 180° flexible head and the 5 degree arc swing make the ratchet spanner ideal for use in tight spaces. Ratchet spanner has 72 teeth and a 12 point bi hex drive. Surface treated with matt chrome. Surface drive plus provides stronger grip on fasteners, reducing fastener rounding and improving torque capacity., Weight: 0.5070632026 pounds, Manufacturer: DAKCOS