Make it Snappy Tools Adjustable Low Friction Non-Marring Rotating Countersink Ball Bearing Depth Stop Collar. Proudly Made in The USA.;

Rotating stop collar uses a low friction bearing in a large diameter ring to control the countersink depth of Snappy Gold Screw Countersinks. The inside of the rotating stop collar continues to spin with the countersink to prevent burning or marring the workpiece. Countersink bit is not included.