High density, strong and The product is made of hard alloy steel, which has the advantages of integral heat treatment, high hardness, large torsion and long service life. The handle is made of rubber handle, designed according to ergonomics, which increases friction and is not easy to slip and feels comfortable. The is processed by special technology to improve the hardness. Conveniently used for engraving machine, electric spindle, spindle motor extension rod, clamping nut rotation, etc., Manufacturer: PokFhgur