Lobed knobs also called clamping knobs, grip knobs, star knobs have a scalloped edge to allow for maximum grip and comfort. These durable lobed knobs are impact and chemical resistant and provide a neat appearance for finished applications that require adjustment Reid Supply has a wide range of lobed knobs, from plastic knobs to stainless steel and iron, allow with multiple threaded mount types which allow the operator to create a firm and secure grip with just the fingers.