Lobe knobs are available in a wide range of configurations from 3 to 8 lobes, these plastic lobed knobs provide positive clamping action. Lobed knobs are available in a large selection of insert or stud materials including, but not limited to: steel, brass, stainless steel, and zinc plated. Lobed knobs are available in colors other than black as "special orders" and for sufficient quantities. Plastic lobed knobs are ideal for use on machines or equipment requiring an economical, clamping element.