Revolving ball knob

The revolving ball knob has a long-shoulder design and comes with inch or metric mount threads. Designed for applications where a comfortable, friction-free palm grip is required, the product can be mounted on handwheels, crank handles and various other turning or steering mechanisms. The knobs are produced from black phenolic plastic, with a steel-threaded spindle and a black oxide finish. Ball knobs with internal threaded shafts are also available.

J.W. Winco, Inc., 800/877-8351. www.jwwinco.com