Description: Carbide ball knob with shiny finish Suitable for general applications such as lawn mowers, exercise equipment, machinery, valves, bung etc. Specifications: Product Name : Ball Knob Mounting Type : Female Thread Thread Thread Depth : About 34mm Mounting Screw Size : M20 Sphere Diameter : 50mm Material: Thermoset Resin Rim Style : Smooth Package Content: 2 x Ball Knobs