Material: This wrench is made of high-quality hard carbon steel, which is wear-resistant and , with long service life. The handle is wrapped in rubber and feels comfortable. Usage: universal adjustable grinding wrench, adjust the tightness of nut on the wrench to adjust the size. The kit includes four adjustable grinding wrenches. Colour:Blue & Black Material:steel Size:wrench length:190mm Package Contents: 4 * Angle grinder wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.