Grizzly H7694 Master Forstner Bit, 31-Piece Never be without the right size bit with this 31-pc master forester bit set starting at 1/4-Inch and going all the way to 2 1/8-Inch this set include Hex shanks fit 3/8-Inch drill chucks and prevent chuck slippage that otherwise leads to scarring and decreased accuracy Starting at 1/4-Inch and going all the way to 2 1/8-Inch this set includes every bit in between in 1/16-Inch increments