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LotusModel FF4 (Mission 40) -4 Inch DTH Hammer

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4” DTH Hammer, with Top connection Threads 2 3/8” API – IF PIN, Shank Type – Lotus FF 4 / Mach 44. SUITABLE BUTTON BITS : Flat face(Optional – Concave Face). Dia – 4” ( 102 mm) , Dia – 4 ½” ( 115 mm). Dia – 5” ( 127 mm), Dia – 6” ( 152 mm). Dia – 6 ½” ( 165 mm).

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