Specification Brand : Multizenic BulletPoint1 : Durably Material: Made of -speed steel, these parabolic drill bits offer excellent hardness and strength, ensuring long service and for metalworking . BulletPoint2 : Straight Shank : 3mm straight shank makes installation and removal , providing a secure fit in your drill for accurate and efficient drilling. BulletPoint3 : & : Specially treated Outer layer protected drill bits from and , ensuring they remain in good condition even after extended use. BulletPoint4 : Ideal for Hole Drilling: Designed for hole drilling, these drill bits can handle Difficult metalworking tasks with ease, thanks to their parabolic shape and - . BulletPoint5 : Convenient : Comes in a set of 10 drill bits, making it to replace worn-out bits and ensuring you always have a backup when needed. ItemName : 10Pcs 3x100mm Parabolic Drill Bits, Speed Steel with Straight Shank, Good Hardness for Hole Drilling, Metalworking, and ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 11 centimeters ItemPackageDimensions_Width : 8 centimeters ItemTypeKeyword : extra-long-drill-bits Manufacturer : Multizenic ModelNumber : Multizenickqud38i7x2 NumberOfItems : 1 PartNumber : Multizenickqud38i7x2 ProductDescription : Item Type: Drill Bit Material: High speed steel Shank Diameter: Approx. 3mm / 0.1in Diameter: Approx. 3mm / 0.1in Whole Length: Approx. 100mm / 3.9in Length: Approx. 65mm / 2.6in