The ServoCity 0.09375" (3/32) Steel Set-Screw Collar is designed for securing components on shafts in machinery, functioning as mechanical stops and stroke limiters. This steel collar is easily adjustable by sliding onto an un-hardened shaft and tightening the set screw to secure its position. It is important to note that while effective on un-hardened shafts, the set screw may cause surface marring and is less effective on hardened shafts without flat spots.