Hex key wrench (CR-V) 1 Stainless steel wrench 2 Quick delivery 3 Various materials 1. We supply ... components in compliance with customized designs by materials of stainless steel, mild steel, aluminum, copper, brass, bronze, etc.Surface treatment: zinc/nickel ... ) +/-0.001 mm tolerance will be controlled. 9pcs hex key (CR-V), precision machining parts, stainless steel machining parts, wrench