Specification Brand : NATEFEMIN BulletPoint1 : These flute countersink drill bit set are machined from high speed steels and are available in 6 different diameter sizes. BulletPoint2 : Size - 6mm(1/4''), 8mm(5/16''), 9mm(3/8''), 12mm(1/2''), 16mm(5/8''), 19mm(3/4'') BulletPoint3 : 90° angle on the point for sharp and precise countersinking. The cutting edge is hardened and honed for sharpness. BulletPoint4 : A Chatter-Free,five-flute designed with staggered cutting teeth aranged to insure free chip flow and rapid chatter free cutting BulletPoint5 : Ideal for wooden planks,fiberboard,particle board,plywood,plastic,alumiumn board ,pcb board and more CuttingAngleString : 90.0 degrees ExternallyAssignedProductIdentifier : 9965722967998 ItemName : 6 PCS Countersink Chamfer Drill Bit 6MM-19MM Hex Shank Titanium Plated HSS Drill Bit Set 5 Flute Wood Tools 48MM/1.88'' Length Accessory ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 18 centimeters ItemPackageDimensions_Width : 10 centimeters ItemTypeKeyword : countersink-bits Manufacturer : NATEFEMIN ModelNumber : UNIVERSAL NumberOfItems : 1 PartNumber : NUSD049600000 ProductDescription : Features: These flute countersink drill bit set are machined from high speed steels and are available in 6 different diameter sizes. Size - 6mm(1/4''), 8mm(5/16''), 9mm(3/8''), 12mm(1/2''), 16mm(5/8''), 19mm(3/4'') 90° angle on the point for sharp and precise countersinking. The cutting edge is hardened and honed for sharpness. A Chatter-Free,five-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 and more Great for Sinking 90 Degree Holes into Wood and Soft Metals Countersunk Screws and Fixings.Suitable for DIY, Home and General Building/Engineering Using 1/4″ hex shank countersinks are fine for a quick drill. They don't slip in drill chucks. You can make deep countersinks easily by setting the countersink's depth stop to allow the countersink to drill more deeply into the worksurface