Deluxe Ball – The ultimate in quality ball knobs that provide a seamless appearance/surface and are polished to a high gloss finish.Standard Ball – The most complete line of one of the best shapes available. Thousands of uses – lawn mowers, exercise equipment, machinery, valves, spigots, etc. Available on some models with a shank for added clearance. Can be decorated to your specifications. Engraving, hot stamping, and pad printing available for all parts.Thermoplastic Ball – Quality ball knobs made of polypropylene with a brass insert. Available in Red and Black. Click on the Buy Now button for additional information and search by diameter, mounting, material, etc.