Specification:Handle Height: 56mm/2.2";Head Dia: 19mm/0.75"; Thread Size: M8x1.25mm;Total Height: 75mm/3” Used for lathe machine, tailstock, vise handle, radial drilling, drill press table, crank, surface rotary grinders, cylindrical grinder, shaping, boring, profile cutting,Plastic automatic cutting Various Applications - This is a set of knobs that are generally used for industrial machine tools; Used in paper mills, ironworks, metal cutters and grinding machines, and woodworking shops, and is used for table saws, millings, lathes, band saws, and weaving machines