Threaded detent pins fit a wide selection of knob handles for various applications. The quick-release pins have a ground shank and threaded end. Shank diameters are available from 3/16 to ½ in., along with metric sizes, and grip lengths from ½ to 4 in. Pins come with built-in locking balls, which are held in place by spring force — push to insert, pull to remove. Carr Lane Mfg. Co., 4200 Carr Lane Court, St. Louis, MO 63119, (314) 646-1850, www.carrlane.com