Durable Star Knob: These star knobs are made of plastic and brass, not only sturdy to use, but non-conductive and lightweight. Just tighten or loosen it by hand, and you could make a simple protection on your mechanical projects. Star-shaped handle Using these screws on knob nuts on your mechanical projects can really give you a more comfortable grip. What's more, you can adjust your machine tools without getting scratched. Brass Female ThreadThese Brass Female Thread Clamp Knobs would match the compatible bolt thread very well. Holds tight and won't slip. Wide ApplicationThese star knobs work well on cabinets, drawers, doors, lockers, tool boxes, appliances and other furniture or equipment that requires frequent adjustments. Perfectly adapts to your various applications. Widely used in all fields of industry and life, our star knobs would be a good choice for you. What you getThis pack includes 10 pieces of M8x40 star knobs, made in strict compliance with the standardized metric system. M8x40 female thread nut clamp handle, star shape hand knobs black plastic screw-on handle clamp knob for mechanical equipment Our female thread clamp knob knurled nut star shape handle is universally suitable for various furniture or equipment. star button nuts will help you cover and secure bolt/screw threads and prevent scratches. < p>Materials: Brass, Plastic Black color Diameter of female thread: M8 Grip Style: 7 Pointed Star Shape Mount Type: Screw-in, Threaded Hole Head diameter: 32mm Wire diameter: 8mm Wire length : 40mm Package includes: 10PCS Star Shaped Hand Knobs Notes: Please allow 1mm deviation due to manual measurement, we sincerely appreciate your understanding on this