- two-way bit
- two-wing bit
- 双: two; twin; both; dual
- 刮刀: slicker; carryall; erasing k ...
- 钻头: boring crown; bore bit; dril ...
- 刮刀钻头: blade bit; blade drag bit; drag drill bit; drag type bit; dragdrillbit; single-bladed bit; winged scraping bit
- 三刮刀钻头: three-blade bit; three-way bit; three-winged bit
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