T45 76mm Flat Face Standard Body Ballistic Button Bit The T45 76mm Flat Face Standard Body Ballistic Button Bit is a threaded top hammer rock drilling bit designed for efficient drilling in mining, quarrying, tunneling, construction and other rock excavation applications. It features a T45 threaded connection, 76 mm drilling diameter, flat face design, standard body and ballistic tungsten carbide buttons. The ballistic button profile delivers effective rock penetration, while