T38 76mm Flat Face Retrac Body Dome Button Bit The T38 76mm Threaded Button Bit is engineered for high-performance drilling in a variety of demanding applications. This bit features a flat face design , retrac body , and domed button configuration , ensuring efficient operation and durability in challenging rock drilling environments. With a 76mm drilling diameter and T38 threaded connection, the bit is designed for use with compatible T38 drilling systems. The flat face