ITEM NAME:1/4" Hex 3pc 12mm 16mm 19mm Countersink Bore Set for Wood Metal Quick Chang N9U2 1/4" Hex 3pc 12mm 16mm 19mm Countersink Bore Set for Wood Metal Quick Chang N9U2 Type: Drill Bits & Chucks A brand-new Sub-Type: Countersink 1/4" 3 Piece Countersink Set This Fantastic Countersink Set is Great for Sinking 90 Degree Holes into Wood and Soft Metals in Preparation of Countersunk Screws and Fixings. Heat Treated Carbon Steel Blades Ensure Good Tool Life. 12mm, 16mm & 19mm Countersink Sizes 1/4" Quick Change Hex Shank Suitable for all Woods and Soft Metals Package Content:3pc x Countersink Bore Set Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.