Use this stop collar to accurately control depth of cut when using 3/4″Ø and 1″Ø flat-bottom counterbores. Perfect for use with T-nuts, lag-screws, lag-bolts, washer-head screws & more.Fits 3/4″ Ø and 1″ Ø counterbores (Must be put on from back side of 1″ Ø counterbores)To adjust depth of cut, loosen all three set screws using the included 1/8″ hex key, slide to desired depth and retighten set screws to hold the stop collar in place
