Stop Collar for Fuller Tapered Drill Countersink

These stop collars are specially designed to fit our  Fuller Tapered Drill Countersink . They fit the countersink portion of the drill bit and limit the depth of the countersink drilled into the workpiece. These thin, low-profile stop collars allow maximum use of the countersink bit without interference. The 3/8 inch stop collar fits #5-#9 Tapered Drill Countersinks and the 1/2 inch stop collar fits #10 & #12.