Woodstock D4092 Plus Carbide Filler Forstner Bit Set, 15-Piece Hex shanks that will fit 3/8-Inch drill chucks Includes 5/16-Inch, 7/16-Inch, 9/16-Inch, 11/16-Inch, 13/16-Inch, 15/16-Inch bits Includes 1-1/16-Inch, 1-3/16-Inch, 1-5/16-Inch, 1-7/16-Inch, 1-9/16-Inch, 1-11/16-Inch, 1-13/16-Inch, 1-15/16-Inch and 2-1/16-Inch bits Comes in a fitted wooden case