Size:M8x100,Threaded Dia:M8,Total long:100mm/4Inch. Threaded knob, is a good replacement for machine operation handle. Simple installation, no need for other tools, can be installed or disassembled with one hand, saving your time. Great replacement for your broken one with this knob.Widely used for lathe machine, mechanical equipment, instrument and apparatus, industry equipment. Main Material:Metal.Package Includes:2pcs x machine tool handle.