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
Alfa Tools FBM64021 40mm Bormax Forstner Bit - - Amazon.com