R32 48mm Ballistic Button Bit - Standard Body Threaded Rock Drill Bit The R32 48mm Ballistic Button Standard Body Bit is a top hammer threaded rock drill bit developed for professional drilling operations in mining, quarrying, tunneling, underground construction, and rock excavation. The bit features an R32 threaded connection, 48mm drilling diameter, standard body design, and ballistic carbide buttons . Ballistic buttons are designed to provide effective rock penetration and