Amana Tool - FO-560 Multi-Tooth Forstner Bit 3-1/8 Dia x 1/2" Shank - - Amazon.com
Steelex D1024 3" Forstner Bit, 3'' - - Amazon.com
Timber Tuff TMC-02TCFB 2" Tenon Cutter with Forstner Bit - - 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