Specification Brand : uxcell BulletPoint1 : Shank Type: 6.3mm Triangular Shank; Material: High Speed Steel 4241 with Titanium Coated; Drilling Diameters: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2". BulletPoint2 : This step drill bit is durable and strong enough to punch and drill clean holes in materials like metal, wood, etc.. It can also help to enlarge existing holes and clean edges. BulletPoint3 : It is Great for drilling holes for iron, metal, aluminum, copper, wood, plastic, PVC board and many other types of sheets. BulletPoint4 : Suitable for hand-held drilling rigs, drilling machines, milling machines and machining centers, for metal sheet, maintenance and modification, bridge doors and windows, home appliances, etc.. BulletPoint5 : Note: High temperature will affect the working life, please use coolant while drilling on metals to ensure the drill bit working properly. Please keep it properly preserved. Avoid falling the bits from high place. FinishType : Titanium GpsrSafetyAttestation : 1 ItemName : uxcell Step Drill Bit HSS4241 3/16" to 1/2" 6 Sizes Straight Flutes Triangular Shank for Metal Wood Plastic ItemPackageDimensions_Height : 8.89 centimeters ItemPackageDimensions_Length : 1.0922 centimeters ItemPackageDimensions_Width : 6.4008 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : step-drill-bits Manufacturer : uxcell Material : HSS4241 ModelNumber : a20082700ux0720 NumberOfFlutes : 2 PartNumber : a20082700ux0720 ProductDescription : Features: Laser marking makes the size more clear; High speed steel for longer service life; Used on electric drills and drill presses; Double cutting edges design enables a faster and smoother cutting; X-type openings design to facilitate the removal of cutting waste when drilling; The sharpness and titanium coating ensure easily cut through most metal, aluminum, plastic, wood and other materials with ease;
Maintenance Tips: 1.Not for hammer drill. 2.It is recommended to oil the bit before every use. 3.Please drill a smaller hole to make drilling smoother. 4.Please do not set drilling speed too high to avoid damages to cutting edge. 5.The metal sheet on which you want to drill should not exceed 0.38” in thickness. 6.Check the concentricity of the spindle and spring chuck and the clamping force of spring chuck, for it may cause the drill bit broken and make drill hole too large.