Description:Great replacement for your broken one with this Star Knob.Screw on type design for easy install and with surface nice finish for comfortable grip.Widely used for lathe machine, mechanical equipment, instrument and apparatus, food and industry equipment. Specification:Product Name:Clamping KnobMain Color:BlackMaterial: Bakelite,BrassStar Head Diameter :49mm/1.93''Female Thread Diameter:M10Total Height: 30mm/1.18"Net Weight:230g Package Content:4Pcs x Clamping Knob