Specification Brand : Akozon BulletPoint1 : 【Size】 50 pieces and 5 sizes: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 10 in each size, totaling 50 pieces. A 1mm and 1.5mm drill bit with a vise should be used to avoid bit breaks from 2mm to 3mm. The drill bit can only be used on low-speed and low-drilling electric drills. BulletPoint2 : 【High Hardness & Wear The main material is high speed steel treated with and nitriding. Compared with other metal materials, high speed steel has higher wear and durability. The coating increases the hardness of the drill bit and enhances heat dissipation, making the drill bit more wear BulletPoint3 : 【Efficient Removal of Chips】A spiral groove with an oxide coating removes chips quickly. BulletPoint4 : 【Usage】Suitable for drilling holes in alloy steel, wood, non-ferrous metals, cast iron and hard plastics. It is mainly used for the thinning of wood, low hardness and soft metal hole processing, suitable for high hardness stainless steel and other unprocessable material. BulletPoint5 : 【Scope of Application】This kit is mainly used for DIY, and is also ideal for home and general architectural/engineering applications. ExternallyAssignedProductIdentifier1 : 733297101760 ExternallyAssignedProductIdentifier2 : 0733297101760 FinishType : Titanium ItemName : Akozon 50Pcs Drill Bit Set 1/1.5/2/2.5/3mm Coated HSS High Speed Steel Drill Bit Set Tools for Woodworking Plastic Steel and Aluminum Alloy ItemPackageDimensions_Height : 19.5 centimeters ItemPackageDimensions_Length : 1.2 centimeters ItemPackageDimensions_Width : 8.6 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : metalworking-and-multipurpose-drill-bit-sets Manufacturer : Akozon PartNumber : Akozonek3ogv8c69 ProductDescription : Containing Sizes: 10 * 1mm 10 * 1.5mm 10 * 2mm 10 * 2.5mm 10 * 3mm