Ultra-solid ball knob with a Shiny finish, suitable for general application,such as lawn mowers, exercise equipment, machinery, valves, spigots, etc. Product Name: Ball Knob Mounting Type: Female Thread Thread Depth: About 23.5mm/ 0.93 inch Mounting Thread Size: M8 Spherical Diameter: 35mm/ 1.38 inch Material: Thermoset Rim Style: Smooth Package Content: 5Pcs x Ball Knob