Freud PB-100: 1/4" to 2-1/8" (Dia.) 16 Pcs. Forstner Bit Set - Forstner Bit Set - Amazon.com
4 PIECE FORSTNER BIT SET - Fostner 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