ITEM NAME:6pcs 6mm-19mm 82 Degree 1/4 Hex Shank HSS 5 Flute Countersink Drill Bi AQV Descriptio n Features: 100% brand new and high quality. Great for Sinking 82 Degree Holes into Wood and Soft Metals Countersunk Screws and Fixings. A Chatter-Free,5 flute designed with staggered cutting teeth aranged to insure free chip flow and rapid chatter free cutting. Ideal for Wooden planks,Fiberboard,Particle board,Plywood,Plastic,Alumiumn Board ,Pcb Board etc. 1/4†³ hex shank countersinks are fine for a quick drill. Finish: Titanium Coated Shank: Hex Shank Material:High Speed Steel Size:6mm 8mm 9mm 12mm 16mm 19mm Color:as piuctures show Package Includes: 3/6pcs/set 5 Flute 82 ° Countersink Drill Noticeï ¼Å¡ 1cm=0.394inch Please allow a little size error due to different manual measurement. As different computers display colors differently, the color of the actual item may vary slightly from the above images, thanks for your understanding! We offer you what you need! 6pcs 6mm-19mm 82 Degree 1/4 Hex Shank HSS 5 Flute Countersink Drill Bit Tool.3/6pcs/set 5 Flute 82 ° Countersink Drill. Shank: Hex Shank. 1/4†³ hex shank countersinks are fine for a quick drill. Size:6mm 8mm 9mm 12mm 16mm 19mm. Finish: Titanium Coated. We'd like to settle any problem in a friendly manner.