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Details:HSS twist drill bits.We produce all kinds of HSS twist drill bits, the details include:1)standard: DIN338, DIN1897, DIN340, ISO235, ANSI B94.11M, DIN345, DIN 18702)material: HSS 4241, HSS 4341, HSS 9341, M2(6542), M35,3)manufactory process: Roll forged, edge ground, fully ground, milled4)point angle: 118 degree, 135 degree split point5)surface finished: Bright finished, black oxide, tin oxide, black flute & bright shank, rainbow6)flute type: N or VA7)shank: Straight shank drills, taper shank drills, reduce shank drills, 1/2" shank drills, hex shank drills
