This depth stop system is designed especially for forstner bits and any other style drill bit up to 2-1/8" in diameter.
Choose the bushing that fits your forstner bit, slide the bushing in the enclosure's integral bearing, slide over the shank of the forstner bit to desired depth and lock in place with set screw. Slide the second (same size) bushing over the top of the stop and bushing and secure in place with the set screw on the second bushing.
The depth stop has a built in bearing, which keeps the stop motionless while forstner bit spins, which allows the stop to rest on the stock without marking or burning the wood.
Set includes three different bushings to fit on forstner bits that have a shank diameter of:
(Forstner bit not included)