Sizes of ring spanners are 6x7 , 8x9 , 10x11 ,12x13, 14x15 , 16x17 , 18x19 , 20x22 .
Hardness: 42 48 HRC ,Drop forged from high grade Chrome Vanadium Steel and Thoroughly corrosion protected with Nickel Chrome finish.
Scientifically heat treated to give maximum strength and wear resistance.
Ring Spanner Set
