Specification Brand : RETYLY BulletPoint1 : M35 Cobalt Steel - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened , measuring hardness up to 67, for much faster cutting and extra life span, with up to when compared with an average HSS drill bit. BulletPoint2 : No Punch Needed - the 135° quick-cut points are -centering and penetrate quickly with less pressure. not "" or "wander" BulletPoint3 : For Steel - Particularly successful in cutting through hard metals such as steel and iron, although they can be used for softer materials, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate. BulletPoint4 : 50pcs Set - The set includes 50pcs of metric M35 cobalt steel twist drill : 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 10pcs of each size. BulletPoint5 : [Widely Used]: The drill bit has a 1/4inch hexagonal shape shank than could fit into many electric drill chucks Color : Gold ExternallyAssignedProductIdentifier : 4711709010882 ExternallyAssignedProductIdentifier1 : 0759302004000 ExternallyAssignedProductIdentifier2 : 759302004000 FinishType : Finished ItemName : RETYLY 50Pcs Drillforce M35 Cobalt Drill Bit Set,Hss-Co Drill Set 1-3Mm,for Drilling On Hardened Steel, Iron& Steel ItemPackageDimensions_Height : 17.78 centimeters ItemPackageDimensions_Length : 0.6096 centimeters ItemPackageDimensions_Width : 2.5908 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : jobber-drill-bits Manufacturer : RETYLY Material : Cobalt Steel ModelNumber : WM100C NumberOfFlutes : 3 PartNumber : 249854 ProductDescription : Tip Drill Set, Size: 0.0225 - 0.0635 Inch Diameter, Carbon Steel, Drill Size: 74 - 52, Includes: (12) #74 - #52 High Carbon Steel Drills Drill size: 52; 54; 56; 58; 60; 62; 64; 66; 68; 70; 72; 74 Drill size: 0.0635 in; 0.055 in; 0.0465 in; 0.042 in; 0.04 in; 0.038 in; 0.036 in; 0.033 in; 0.031 in; 0.028 in; 0.025 in; 0.0225 in ProductSiteLaunchDate : 2021-12-28T09:37:22.674Z SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Metal UnitCount : 2.1341 UnspscCode : 27111700