Product Introduction The R25 75mm Retrac Button Bit is a threaded top hammer rock drilling bit engineered for mining, quarrying, tunneling and construction applications. The Retrac skirt design reduces the risk of bit jamming and improves drill string retrieval in loose, fractured and broken rock formations. With a durable high-strength alloy steel body and tungsten carbide buttons, this R25 Retrac button bit provides reliable rock penetration, good wear resistance and stable