Specification Brand : Drill America BulletPoint1 : 21 Piece Drill Bit Set, 1/16" - 3/8" x 64ths HSS Bright Finish Screw Machine (Stub) Length BulletPoint2 : High Speed Steel BulletPoint3 : Bright finish in metal case BulletPoint4 : Additional battery life: saves up to 20% of battery life, extending the working life BulletPoint5 : 5 mm cutting diameter: Ideal for drilling accurately on a variety of materials BulletPoint6 : Brand Diager: Manufactured by the renowned company specializing in drilling tools CuttingAngleString : 130.0 degrees ExternallyAssignedProductIdentifier1 : 887861038256 ExternallyAssignedProductIdentifier2 : 0887861038256 ExternallyAssignedProductIdentifier3 : 00887861038256 FinishType : Black Oxide GpsrSafetyAttestation : 1 ItemDisplayDimensions_Length : 3.8 centimeters ItemName : Drill America 21 Piece High Speed Steel Screw Machine (Stub) Drill Bit Set (1/16" - 3/8" x 64ths), D/AST Series ItemPackageDimensions_Height : 2 inches ItemPackageDimensions_Length : 6 inches ItemPackageDimensions_Width : 3 inches ItemPackageQuantity : 1 ItemTypeKeyword : short-length-drill-bits Manufacturer : Drill America Material : High Speed Steel MfgSeriesNumber : A976 ModelNumber : D/A21S-SET NumberOfFlutes : 2 NumberOfItems : 1 NumberOfPieces : 21 PackageLevel : unit PartNumber : D/A21S-SET ProductDescription : Description:
Material : High Speed Steel 4241 Type : N Type 118 degree Bit Diameter : 6.4mm/0.25" Cutting Edge Length : 72mm/2.83" Total Length : 101mm/3.98" Weight: 16g Main color: Silver HRC: 62-63 Package Content: 1pcs x Twist Drill Bit.
How to Use Twist Drill Bits
Ensure the left and right cutting edges of the drill are symmetrical when drilling. Observe the uniformity of the spark while drilling, adjust the pressure in time, and pay attention to the cooling of the bit.