Century 37200 Brad Point Wood Drill Bit Set, 7-Piece Designed to work for all wood projects especially suited for furniture making cabinetry and doweling where an exact hole is required 7 piece set includes 1/8-inch 3/16-Inch 1/4-Inch 5/16-Inch 3/8-Inch 7/16-Inch and 1/2-Inch Brad Point wood drill bits with 3/8-Inch reduced shank Made of chrome vanadium steel hardened and tempered for longer useful life Use in hand drills electric drills drill presses and lathes 3/8-Inch reduced shank