ITEM NAME:6pcs 1/1.5/2/2.5/3/5mm 60 Degree HSS Center Drill Bits Centering Drills Set JTU Descriptio n Features: 100% quality and Brand new. Material HSS High Speed Steel Standard 60 degree included angle precision import double ended Material: high speed steel Color: Gold Model: 6-piece center drill (1mm, 1.5mm, 2mm, 2.5mm, 3mm, 5mm) Dimensions: 1mm 1.5mm 2mm 2.5mm 3mm 5mm Product use: Pre-fabricated precise positioning for hole machining, guiding twist drill for hole machining, reducing error, center drill is used for machining center hole on end face of shaft and other parts Product list: 6-piece center drill High quality buy, happy buyï ¼ 6pcs Center Drill Countersink Set 60Â ° Angle Bits HSS Lathe Mill Press 1mm-5mm.6pcs Center Drill Countersink Set 60Â ° Angle Bits HSS Lathe Mill Press 1mm-5mm. Material HSS. Product use: Pre-fabricated precise positioning for hole machining, guiding twist drill for hole machining, reducing error, center drill is used for machining center hole on end face of shaft and other parts.