Use: Metal DrillingType: Countersink Drill BitDIY Supplies: MetalworkingName: Round Drill BitNatural color three edge mill cutterIt is suitable for use in the work-piece which the hardness is under 25 degrees,Such as aluminum sheet, thin iron plate, the insulating board or PVC boardIts very sharp and durable,you use it for a long time.Quantity: 6pcscolour:SilverMaterial:steelSize:Head diameter * the diameter * length63MM: 63MM * 5MM * 37MM83MM: 83MM * 6MM * 40MM104MM: 104MM * 6MM * 39MM124MM: 124MM * 10MM * 46MM165MM: 165MM * 10MM * 47MM205MM: 205MM * 10MM * 47MMPackage Contents:6*3-blade chamfer drillOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.