T45 76mm Retrac Thread Button Bit Advanced Hydraulic Rock Drilling Tool for Quarrying, Mining, Tunneling, and Construction Operations 76 mm Bit Diameter T45 Thread Type Retrac Skirt Design 8+4 Button Layout Product Overview The T45 76mm Retrac Thread Button Bit is designed for hydraulic rock drilling operations requiring stable drilling performance and effective hole cleaning. It features a T45 threaded connection, a 76mm bit diameter, and a retrac-style skirt suitable for