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bestlink is chinas professional manufacturers and suppliers of air grinding machine for integral steel rod and chisel bits. our factory also provides the best customized service for high-quality chisel bits grinder with CE certification.model no. air grinder sed with small rock drill on non-power source scene and working site, solving the drills tool sharpening problem.it is a ideal supporting tools for air rock drill and dieselalibaba.com offers 828 integral drill rod grinding machine products. wide variety of integral drill rod grinding machine options are available to you, such as key