Specification Brand : ZLWei BulletPoint1 : Material:High Speed Steel;Multiple specifications to choose from. BulletPoint2 : Not for quenching. (Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling) BulletPoint3 : Attention:Because of the outer diameter of each step of the step drill is gradually expanded,then the corresponding cutting resistance and linear velocity will also be gradually increased.Please give a downward force when drilling, do not press down too hard to avoid the edge wearing. BulletPoint4 : NOTE: The thickness must be within 4mm. BulletPoint5 : Easy to use,Good Performance and long lifeand new and high quality. Color : 3PC 4-12 4-20 4-32 ExternallyAssignedProductIdentifier : 9475311606271 FinishType : Stainless steel ItemName : ZLWei 3pcs Spiral Grooved Drill Bits 3-12 4-12 4-20 Drilling Power Tool Metal Stainless Steel Wood Hole Cutter Cone Fast Drill Bit Set ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : drill-mills Manufacturer : ZLWei ModelNumber : 5498 NumberOfItems : 1 PartNumber : 5498 ProductDescription : ZLWei 3pcs Spiral Grooved Drill Bits 3-12 4-12 4-20 Drilling Power Tool Metal Stainless Steel Wood Hole Cutter Cone Fast Drill Bit Set ProductSiteLaunchDate : 2024-04-09T00:47:39.603Z Size : A UnitCount : 1