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Common drill bit sizes:75mm-220mm
The drill bit connection drill pipe thread can be customized
The number and shape of the drill blade support customized machining
PDC three-wing scraper coreless drill bit is used for slightly soft soil sandstone formations
Product Information:
1. wear resistance
2. high efficiency
3. long service life
4. direct selling with reasonable price
5. MOQ: 1pcs for checking the quality
6.customized order is available
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