Snappy’s stop collars are specially designed to work with their countersinks to control the depth of counter-bore. These stop collars are slightly longer in length than a traditional stop collar and feature a set-screw to hold their position on the countersink cutter. This 3/8" stop collar works with countersinks that have 3/8" counter-bore cutters.

Features:
• 3/8" I.D. stop collar with locking set-screw
• Controls counter-bore depth for uniform appearance
• Stop location is adjustable
• Works with countersinks that have 3/8" counter-bore cutter
• Stop collar only, countersink sold separately