A comprehensive range with 'Button', X and Cross with tungsten carbide tipped head configurations. Button Bit designs include; Standard, heavy duty, drop centre, ballistic, parabolic and retract and combination options. Available with all popular international thread forms such as R28, R32, R38, T38, T45, T51 which can be equipped with rock drilling machines such as Atlas Copco, Boart Longyear, Sandvick, Ingersoll-Rand, Furukawa and so on. (1)thread: R22, R25, R28, R32, R35, R38, T38, T45, T51, ST58, T60 (2)diameter:42mm-127mm (3)package: in wooden box or in carton. (4)Supply ability:10000/month (5)Delivery time :30days.