... price SpecificationsRock Drilling Tools:Retract Button Bits, Chisel Bits,Drill Rods,DTH Hammers & Bits,Shank Adaptors,Coupling Sleeves.Manufacturer Of ... cover the following: 1. Top-hammer drilling tools including drill bits, coupling, taper rods, integral rods, extension rods, ... rock drills, hydraulic rock drills, etc. 5. Diamond core drilling tools including the diamond core bits(BQ, NQ, HQ, PQ, TT, T2 ...