This collet wrench is made of , which can withstand use. Features the steel material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. This collet wrench will make the repair and fix easier and smoother. Features - -Material:Steel - Size: 21.50X6.00X1.00cm/8.45X2.36X0.39in Hardness: 40-45 degree - Adopt high grade carbon steel, molding by stamping, high frequency firing, high hardness. - Plating surface, electrophoresis process, suitable for various scenarios such as lathes, processing, maintenance, etc. - The handle of our clamping nut spanner is skid-proof, which is designed to hold the spanner tightly and saves effort as you use it. - Unique design, excellent shape spanner, not easy to break and has a . - Great craftsmanship, delicate shape, good texture, beautiful look, fashionable and unique. Package list: 1 x hook wrench