rock bit At The Best Prices - Alibaba.com
Product Feature 1.Button bit is well known for its high wear resistance on medium-hard to hard abrasive rock formations (between 200 Mpa to 260 Mpa compressive strength). 2.Recommended for eliminating hole deviation 3.Widely used drifting and tunneling 4.Bit face design is ideal for medium-hard to hard abrasive rock Type Dia.
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