【Durable Star Knob】: These star knobs are made of plastic and brass, not only robust in use, but also non-conductive and lightweight. Just tighten or loosen it by hand, and you can create a simple protection on your mechanical projects. 【Star-shaped Handle】 By using these screw-on knob nuts on your mechanical projects, you can truly get a more comfortable grip. In addition, you can adjust your machine tools without scratching yourself. 【Brass Female Thread】 These clamping knobs with brass female thread will fit very well with compatible bolt thread. Holds tight and does not slip. 【Wide Application】 These star knobs work well on cabinets, drawers, doors, cupboards, toolboxes, appliances and other furniture or equipment that requires frequent adjustment. Perfectly suited for your various applications. Our star knobs are widely used in all areas of industry and life, and will be a good choice for you. 【What you get】 This package contains 10 pcs. M8x40 star knobs, manufactured in strict accordance with the standardized metric system. They will get the job done!