Specification Brand : Utoolmart BulletPoint1 : 【Step Drill Bit Set】- This step drill bit set has 3 different sizes which is 3mm-12mm(3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm and 12mm), 4mm-12mm(4mm, 6mm, 8mm, 10mm and 12mm) and 4mm-20mm(4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm and 20mm). So you can drill up holes with different diameters, saving your time and efforts to change bits. BulletPoint2 : 【High Quality Materials】- High-speed steel makes it last longer than others, titanium coating ensure easily cut through iron sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease, and it can automatically deburr holes while drilling to keep the drill bit clean. BulletPoint3 : 【Advantage】- Multiple size multiple hole stepped up bits, have many steps which contain multiple diameters, convenient to drill different hole size by using a step drill rather than many drills, which greatly saves you a lot of trouble. BulletPoint4 : 【Meet Your Demands】- With the step drill bits we offered, Great for steel sheets / aluminum sheets / copper / plastic / wood board and many other types of sheet metal with ease countersunk. Suitable for home DIY, general building and engineering use. BulletPoint5 : 【Warm Tips】- This step drill is suitable for pistol drill and bench drill. Injecting water for cooling while working can effectively prolong the service life of the drill bit. The recommended drilling speed is 250--400 rpm. Color : Purple CuttingAngleString : 135 degrees ExternallyAssignedProductIdentifier1 : 0888143205113 ExternallyAssignedProductIdentifier2 : 888143205113 FinishType : Titanium GpsrSafetyAttestation : 1 IncludedComponents : Step Drill ItemName : Utoolmart Step Drill Bit, 3mm-12mm, 4mm-12mm, 4mm-20mm High Speed Steel Drill Cone Bits, Coated Straight Flutes Hex Shank Drill Bit, for Sheet Aluminium Metal Wood Hole Drilling, 1 Set ItemPackageDimensions_Height : 9.7 centimeters ItemPackageDimensions_Length : 1.4 centimeters ItemPackageDimensions_Width : 7.3 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : step-drill-bits Manufacturer : Utoolmart Material : Alloy Steel ModelNumber : A1161041010R101082P NumberOfItems : 1 PackageLevel : unit PartNumber : UT190924Z-0076 ProductDescription : Utoolmart Step Drill Bit SetDescription* Unique stepped structure, one drill bit can open a variety of sizes and sizes, and one step drill can reach a box of drill bits.* There is no need to use the center punch, and it is not easy to break compared with ordinary twist drills. On-site construction, one step drill is suitable for various specifications. * It becomes possible to deburr, chamfer, open elliptical holes and expand, and twist drills cannot perform functions.* Compared with ordinary twist drills. It has little wiggle and can make a beautiful hole without using the center punch first.* This step drill is suitable for pistol drill and bench drill. Injecting water for cooling while working can effectively prolong the service life of the drill bit.* Suitable for workpieces with general hardness, such as iron plates, the thickness of the plate is about 1mm. The recommended drilling speed is 250--400 rpm.* Due to the different monitor and light effect, the actual color of the item might be slightly different from the color shown on the pictures.* Please allow 1-2mm error due to manual measurement, please make sure you do not mind before you bid.Technical Parameters* Product Name: Step Drill Bit* Material: High Speed Steel* Product Type: 3mm-12mm, 4mm-12mm, 4mm-20mm* Surface Treatment: Titanium Plating* Drilling Speed: 250--400 R.P.M* Color: Gold + SliverPackage Content* 1 Set x Step Drill Bit ProductSiteLaunchDate : 2019-10-21T02:37:27.457Z Size : S1 Style : High Speed Steel Step SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Wood,Metal,Steel UnitCount : 1 UnspscCode : 27111700