Specification Brand : Auniwaig BulletPoint1 : 【Superior Material】Our Countersunk Drill Bits are made of high - speed steel, offers excellent heat resistance. The oxide coating prevents corrosion, ensuring a long service life for wood, metal, and plastic work. BulletPoint2 : 【Multiple Sizes】This countersink drill bit set includes 5 popular sizes: 1/4", 3/8", 1/2", 5/8", and 3/4". Choose the right bit for your specific project, be it a small DIY or large - scale fabrication. BulletPoint3 : 【Efficient Debris Removal】With 5 flute design, these bits efficiently remove debris during drilling process, enabling smoother and cleaner countersinking. Screws sit flush, saving time and effort on your tasks. BulletPoint4 : 【Wide Application】This 82-degree tip drills countersink holes for wood, metal, and plastic. Ideal for deburring, chamfering, and countersinking in woodworking projects. Just make sure to create a pilot hole with a tap first for the best results. BulletPoint5 : 【Easy to Operate】The 1/4" quick - change hex shank fits seamlessly into most power drills and drivers. Drill holes in medium - hardness materials such as copper, aluminum, plywood, softwood, hardwood, and fiberglass plastics,convenient for woodworkers and DIY enthusiasts. CuttingAngleString : 82 degrees FinishType : oxide coating IncludedComponents : Countersink Drill Bit ItemName : Auniwaig 5Pcs Countersink Drill Bit Set, Premium HSS Drill Bit with 82-Degree, 5 Flutes 1/4" Quick-Change Hex Shank, 1/4", 3/8", 1/2", 5/8", 3/4" Size Counter Sink Drill Bitsfor Wood, Metal, Plastic ItemPackageDimensions_Height : 8.9916 centimeters ItemPackageDimensions_Length : 2.8956 centimeters ItemPackageDimensions_Width : 6.604 centimeters ItemTypeKeyword : countersink-bits Manufacturer : Auniwaig Material : High Speed Steel (HSS) NumberOfItems : 5 PartNumber : 250313B-0001 ProductDescription : Our countersunk drill kit includes countersunk drill bits in 1/4", 3/8", 1/2", 5/8" and 3/4" sizes for electric hand drills, percussion drills, bench drills, electric screwdrivers and other tap machines. ProductSiteLaunchDate : 2025-03-19T07:29:50.232Z SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 27111700