We will stack our high quality Steelex® Forstner Bits up against any bit in the world. In fact, an independent testing lab proved that the Steelex® brand cut was equal to or better than Forstner bits from Austria, known for being the best. For use with drill presses. These 1-3/16″ diameter forstner bits have a 3/8″ shank and are 3-1/2″ Long.