Shaft Collars keep shafts from moving along their length during transfer of motion. Set Screw type: Slide collar on the shaft and tighten hex-head cup-point set screw for a positive lock. Collar Steel 1/2" (set screw) $1.49 Collar Steel 1/4" (set screw) $0.79 Collar Steel 1/8" (set screw) $0.99 Copyright © 2003-2008 E-Clec-Tech. All rights reserved. All other materials and logos are copyrighted by their respective owners, or companies.