ITEM NAME:3pcs 5 Flute Countersink Drill Bit Set 90 Degree Chamfering Cutter For Wood B2Q5 3pcs 5 Flute Countersink Drill Bit Set 90 Degree Chamfering Cutter For Wood B2Q5 Great for sinking 90 Degree holes into wood and soft metals in preperation of countersunk screws and fixings. Set features all commonly used sizes including 12mm, 16mm & 19mm all with 1/4 inch hex quick change shanks to facilitate fast changing with a 1/4 inch quick chuck system. Heat treated carbon steel blades ensure good tool life. Suitable for all woods and soft metals Diameter: 12mm, 16mm, 19mm / 0.47 inch, 0.62 inch,0.74 inch Length: 6.35mm (1/4 inch) color:black Material: steel Package included: 1 set x Countersink Drill Bit