Ball-bearing rub collars for template and freehand pattern shaping, stocked in Type A sizes from 1-5/8" to 125mm OD in 3/4" and 1-1/4" bores — with custom collars made to order up to 6" OD.
Outside diameter sets the depth of cut against the pattern, bore matches the spindle; standard collars are 1/2" thick — 7/16" on the small 3/4"-bore sizes — and the largest diameters come weight-relieved.
