Accu-Mount Collars provide effective method for mounting sprockets, gears, pulleys and other components on shaft. Collar has smooth bore that won’t mar shafts and centering hub with square and flat side that has 4 predrilled and tapped holes for attaching components. Providing wobble-free component mounting method, collars are machined from steel in 11 sizes from 0.5 to 2 in. ID and are supplied with keyway. They are priced from $19.95 (list), depending upon size.