Ball knobs come in a large variety of different materials and sizes and are commonly used on applications that have up-down and right-left directional movement. Ball knobs come in a large variety of different materials and sizes and are commonly used on applications that have up-down and right-left directional movement. They are also used for tightening, fastening, and pulling on an object, which make them a perfect choice for control levers. Their round design makes for an easy and comfortable grip no matter the material. Monroe has a large assortment of ball knobs available in many materials and are available in many sizes. Engineered and manufactured to strict standards, our industrial knobs can be used in every industrial product.