Taper shank twist drill ke sesebelisoa se sebelisoang ka ho fetesisa bakeng sa machining a lesoba, hangata ka bophara ba limilimithara tse 0.25 ho isa ho tse 80.Haholo-holo e entsoe ka likarolo tse sebetsang le likarolo tsa shank.Karolo e sebetsang e na le li-grooves tse peli tse pota-potileng, tse bōpehileng joaloka twist, kahoo e bitsoa.Ho fapana le drill e otlolohileng ea shank twist, karolo ea taper shank twist e na le taper.Litlhaloso tse fapaneng tsa "twist drill" li na le "Morse taper" e fapaneng.
1. E entsoe ho DIN338, DIN340, DIN1897
2. Boleng bo phahameng ba HSS tšepe, 4341/9341/M2/M35
3. Thepa e entsoe, e tletse fatše
4. Ntlha ea ntlha: 118 ° kapa 135 °
Setsi sa setsi se sebelisetsoa ho lokisa lesoba le bohareng karolong e qetellang ea shaft le likarolo tse ling.