Taper shank twist drill nigikoresho gikoreshwa cyane mugutunganya umwobo, mubisanzwe hamwe na diameter ya milimetero 0,25 kugeza 80.Igizwe ahanini nibice bikora hamwe n'ibice bya shank.Igice gikora gifite ibice bibiri byizengurutse, bikozwe nkibigoramye, izina ryayo rero.Bitandukanye na shank igororotse igororotse, igice cya taper shank twist drill igice gifite taper.Ibisobanuro bitandukanye bya twist drill bifite Morse taper itandukanye.
1. Yakozwe kuri DIN338, DIN340, DIN1897
2. Icyuma cyiza cya HSS, 4341/9341 / M2 / M35
3. Kuzenguruka impimbano, yuzuye
4. Inguni y'ingingo: 118 ° cyangwa 135 °
Imyitozo yo hagati ikoreshwa mugutunganya umwobo wo hagati kuruhande rwanyuma rwa shaft nibindi bice.