Ring spanners have an elliptical pattern & are cold stamped from chrome vanadium (31CrV3) steel
Conform to DIN 838
Spanners feature super drive broach reducing corner rounding & applying more torque
Fully heat treated to 42-48 HRC for increased work life
Rust proof matte finish
Size laser etched on both ends for easy identification
Available as loose or in sets in metric sizes
