Features:
Industrial grade chromium vanadinum metal is used for forging, warmth treatment, excessive hardness and impression resistance
Strong torsion,the thicken design suitable for electrical and pneumatic tools,great influence resistance
Surface sharpening phosphating medication make it has large erosion resistance
Simple design and delightful appearance
Specification:
Brand: STONEGO
Material:chromium vanadinum metallic
Style:1/4 inch(40mm); 3/8 inch(50mm); 1/2 inch(70mm)
Quantity: 1PC