custom 4 inch dth drill bit

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Application: for well drilling. out diameter: from 2 3/8” to 6 5/8″ length ranges: range 1: 18 ft. to 22 ft. range 2: 27 ft. to 30 ft. range 3: 38 ft. to 45 ft. types: drill pipe heavy weight drill pipe tool joint pup joint coating

Down-the-hole (dth) rockmore international manufactures the finest and most efficient dth hammers and bits for the mining, construction and water well industries.

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