Description Our set of clamping screw knobs is designed for a variety of applications where secure fastening is required. These knobs are ideal for use in machinery, equipment, and furniture assembly, providing a reliable grip and easy adjustment. The handle provides a comfortable and firm hold, making it simple to tighten or loosen the screws. Features -Color:Black -Material:Plastic -Size:5.50X3.00X3.00cm/2.16X1.18X1.18in -Thread:M8 x 40mm -Secure clamping: Our clamping screw knobs provide a secure and tight grip in various applications, keeping your objects or components held firmly in place -Easy operation: The screw mechanism of our clamping knob allows for easy and effortless tightening and loosening, improving your work efficiency -Comfortable grip: Featuring a plastic head manual knob, the thumb screw offers a comfortable grip and control, suitable for various machinery lathes -Versatile applications: Our clamping screw is suitable for woodworking, metalworking, or other industrial processes, making it a valuable tool -Lasting use: The screw knob is designed to resist wear and tear, can withstand the pressure and force applied during clamping, providing a long-lasting solutionPackage list: 20 x clamping screw knobs