Taper shank twist kubowola ndiye chida chomwe chimagwiritsidwa ntchito kwambiri popanga dzenje, nthawi zambiri chimakhala ndi mainchesi 0,25 mpaka 80 mm.Amapangidwa makamaka ndi ziwalo zogwirira ntchito ndi ma shank.Mbali yogwira ntchito imakhala ndi mizere iwiri yozungulira, yopangidwa ngati yopindika, motero imatchedwa dzina.Mosiyana ndi kubowola kwa shank twist, taper shank twist drill ili ndi taper.Mafotokozedwe osiyanasiyana a ma twist drill ali ndi taper yosiyana ya Morse.
1. Zapangidwa ku DIN338, DIN340, DIN1897
2. Chitsulo chapamwamba cha HSS, 4341/9341/M2/M35
3. Pereka phulusa, nthaka yodzaza
4. Mbali ya mfundo: 118 ° kapena 135 °
Kubowola kwapakati kumagwiritsidwa ntchito popanga dzenje lapakati kumapeto kwa shaft ndi mbali zina.