hat
9, tout gwosè: plizyè types dedyaman pyès santralnan diferan entènasyonal standa (diferan diamètres, figi diferan konplo, matrice diferan wotè ets) pou kase, ponyèt mwayen pou fòmasyon wòch karyann.
eng
9,Sizes: various kinds of diamond core bits in different international standard (different diameters, different face designs, different matrix height etc ) for soft, medium to hard rock formations.