Steel square driver valve wrench spanner
material:carbon steel
size:17*17mm,19*19mm,22*22mm,27*27mm,30*30mm,
32*32mm,36*36mm,41*41mm,50*50mm,
material:carbon steel
size:17*17mm,19*19mm,22*22mm,27*27mm,30*30mm,
32*32mm,36*36mm,41*41mm,50*50mm,
1.to tighten and loosen round nuts with notches.
2. Sizes fit to the outer diameter of round nuts.
3. Made from selected alloy steel,
4. Hooks are hardened and tempered