Check the listing for details. M5x15mm Male Thread Round Knurled Clamping Knobs Grip Thumb Screw on Type 4pcs. Condition: New. Listed at 10.49 USD. Descriptions:* Great replacement for your broken one with this Knurled 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. Specifications:Product Name: Clamping KnobKnurled Head Diameter: 21mm/ 0.83"Male Thread Diameter: M5Thread Length: 15mm/ 0.59"Total Height: 29mm/1.14"Net Weight: 36gMain Color: Black, Silver ToneMaterial: Bakelite, Metal Package Content:4 Pcs x Clamping Knob.