... price SpecificationsRock Drilling Tools:Retract Button Bits, Chisel Bits,Drill Rods,DTH Hammers & Bits,Shank Adaptors,Coupling Sleeves.Manufacturer ... cover the following: 1. Top-hammer drilling tools including drill bits, coupling, taper rods, integral rods, extension rods, ... and core barrel. 6. Others including light rail, rock anchoring tools, furnace taphole drilling tools, miners caplamp, etc.All ...