Specification Brand : Yunseity BulletPoint1 : GOOD CUTTING HARDNESS AND SPEED: Twist drill bits are made of good quality HSS materials with fully ground to ensure cutting hardness and speed BulletPoint2 : HIGH TEMPERATURE AND WEAR RESISTANT: Twist drill bit set adopt vacuum quenching and full grinding process, come with high temperature resistance and wear resistance BulletPoint3 : ACCURATE POSITIONING: The cutting edge is processed by 135 degree double back angle process, and the positioning is accurate BulletPoint4 : 1.5-6.5MM SHANK DIAMETER: There are 13 different specifications of shank diameter, including 1.5-6.5mm, which will meet your different using needs BulletPoint5 : FOR WOOD METAL CUTTING: The top angle of the outer blade is 135°, which is specially used for woodworking and metal processing. Equipped with iron box packaging, easy to carry Color : Bliack CuttingAngleString : 135.0 degrees FinishType : Finished ItemName : 13Pcs Twist Drill Bits,Fast Change HSS for Wood Metal Cutting 1.5‑6.5mm Shank with Case,135 Degree Double Back Angle Process Drill Tap Bit,Vacuum Quenching,for Wood Metal Cutting (Bliack) ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 13 centimeters ItemPackageDimensions_Width : 9 centimeters ItemTypeKeyword : countersink-bits Manufacturer : Yunseity Material : Carbide ModelNumber : Yunseitynob0us3q7z-11 NumberOfItems : 1 PartNumber : Yunseitynob0us3q7z-11 ProductDescription : Specification: Item Type: Drill Bits Type: Round Shank Diameter: Approx. 1.5mm / 0.06in 2mm / 0.08in 2.5mm / 0.1in 3mm / 0.12in 3.2mm / 0.13in 3.5mm / 0.14in 4mm / 0.16in 4.5mm / 0.18in 4.8mm / 0.19in 5mm / 0.2in 5.5mm / 0.22in 6mm / 0.24in 6.5mm / 0.26in Outer Edge Angle: 135° Packing: Iron box Product Use: Specially used in woodworking and metalworking