Specification Brand : Hilitand BulletPoint1 : [Stable ] Made of high-speed steel with high hardness, ensuring stable and drilling. BulletPoint2 : [High Efficiency Drilling] This step drill bit ensures high efficiency and precision during your work. BulletPoint3 : [Secure Installation] The shank is securely fixed to the tool to prevent slipping, quick and simple to install with its small size. BulletPoint4 : [Versatile Usage] Suitable for drilling holes in stainless steel, plastic, copper, and more materials. BulletPoint5 : [Easy Deburring] Allows for quick deburring and easy removal of particles to keep the drill bit clean. IncludedComponents : No ItemName : Step Drill Bit, Quick Deburring, Spiral Grooved 4-22mm High Speed Steel Drilling Head for Iron Wood ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 11 centimeters ItemPackageDimensions_Width : 3 centimeters ItemTypeKeyword : step-drill-bits Manufacturer : Hilitand ModelNumber : Hilitandg1ceius8m0 NumberOfItems : 1 PartNumber : Hilitandg1ceius8m0 ProductDescription : Spec: