Specification AgeRangeDescription : adult Brand : Star USA BulletPoint : Includes 5 pieces BulletPoint1 : 1. Our stepped drill bits can process holes of different diameters and are suitable for heavy-duty metals, iron, aluminum, brass, plastics, aluminum alloys, wood, plastics, and other materials, making them suitable for household and general use. BulletPoint2 : 2. The double groove spiral groove design can chips, and debris, achieving clearance and smooth cutting. The 118 ° split tip drill bit can reduce friction, pressure, and heat, making the drill bit durable and efficient. BulletPoint3 : 3. The split tip design helps reduce walking. The high-speed steel conical mesh design for plastic, wood, and metal is durable to breakage. The black and gold coatings help rust and wear. BulletPoint4 : 4. The cutting blade adopts high-quality double-sided cutting spikes, which can grab wood and carve it off, creating beautiful holes and reducing breakage. Accurately drill holes in wood, fiberglass, plastic, and PVC. BulletPoint5 : 5. Accurate: A 60 degree angle center drill is very useful for drilling precise center holes, 60 degree countersunk holes, or starting holes for larger drill bits in metal processing. BulletPoint6 : Packed in plastic box for safe storage and easy carrying. Color : Style1 100pcs ExternallyAssignedProductIdentifier : 8161311623301 ItemName : Sizes #1-30 Reamer Blanks Size: #22 (.1570"), OAL: 3-1/8" (5 Pcs.) ItemPackageDimensions_Height : 10 centimeters ItemPackageDimensions_Length : 20 centimeters ItemPackageDimensions_Width : 15 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : drill-blanks Manufacturer : Star USA Material : High Speed Steel ModelName : 佳汇 ModelNumber : 佳汇 NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : 2315708583 ProductDescription : Impact Set with Storage Box Woodworking Drill Bits Material : High Speed Steel NOTE checked by hand, please allow 0~10mm error length : 43cm ProductSiteLaunchDate : 2011-10-07T16:36:09.624Z Size : One Size UnitCount : 1 UnspscCode : 20121600