Milescraft 2330 Euro Hinge Bit – 35mm Boring/Forstner Bit for Drilling Concealed Hinge Holes. Tungsten Carbide Blade Tips Quickly Create Clean, Smooth Hinge Cup Holes. Works with Euro Hinge Jig - - Amazon.com
Fisch FSA-196037 16pce Wave Cutter Forstner Bit Set In Custom Wooden Box, Includes bits from 1/4-Inch up to 2-1/8-Inch - Power Drill Accessories - Amazon.com