Hard Taper shank twist drills Our factory supply: end ... grinding wheel, diamond tool, thread tap, ball nose, twist drill, HSS tool bits, gear hob,....Product features: Hard ... Taper shank twist drillsStandard: DIN338 Production technics: 1. Roll forged; 2. ... ° Or 135° Split point 2) 118° General angle 3) 135° General angle Metric Size ( mm ) as below: 0.2 ...