Durable canvas button: These canvas buttons 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 Grip Using these screws on knob nuts on your mechanical projects can really give you a more comfortable grip. In addition, you can adjust your machine tools without getting scratched. . Brass Female Thread These brass female thread clamp knobs would match very well with the compatible bolt thread. Holds well and doesn't slip. . Wide Application These canvas knobs work well on cabinets, drawers, doors, lockers, tool boxes, appliances and other furniture or equipment that needs frequent adjustment. Perfectly fits your various applications. Widely used in all fields of industry and life, our canvas buttons would be a good choice for you. . What you get This pack includes 10 M6 canvas buttons, manufactured in strict accordance with the standardized metric system. They will do the job .