Check the listing for details. M4 x 20mm Male Thread Knurled Clamping Knobs Grip Thumb Screw on Type - Black. Condition: New. Listed at 2.23 USD. Product: M4 x 20mm Male Thread Knurled Clamping Knobs Grip Thumb Screw on Type - Black Description: 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. Features: Thread Diameter: M4; Thread Length: 20mm/ 0.79". Safe, secure grip for the ultimate in adjusting and tightening control. Tightly molded-in metal insert insures optimal durability and functionality. Great for saw, drill press, lathe and routing jigs. Package Content: 1 Pc Knurled Knob Screw. Specifications: Product Name: Clamping Knob Knurled Head Diameter: 16mm/ 0.63'' Male Thread Diameter: M4 Thread Length: 20mm/ 0.79" Total Height: 31mm/ 1.22" Net Weight: 20g Main Color: Black, Silver Tone Material: Bakelite, Metal Package includes: 1 Pc Knurled Knob Screw (Various Knob Head - Same thread and lenght size) Note: Photos and/or description may differ from actual products. Information from suppliers or packaging. 02L-01P - Made in China - Tools - NEW - 399/300 - TGCP - 14/16 IRN: 065030702010-300 ************************************* Don't miss this deal! *************************************