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1. The material they are made from—This can be made from steel or carbide, which is an extremely hard material that will last longer than other drill bit materials. 2. The size of the drill bit—You should choose a drill bit based on the size of hole you need to drill, as well as your project's requirements (e.g., what type of material you are drilling through).



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2. PDC core bit/ PDC non-core bit; 3. Diamond core drill bit/ Diamond glass drill bit/ Brazed diamond core drill bit; 4. Tungsten carbide drill bit: Twin-wing coal bit, chisel bit, cross bit, button bit. etc; 5. Coal pick/ Drill rod; 6. DTH hammer bits, PDC oil bits, tricone bits; 7. Drilling rigs and other drilling tools.





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