We Supplies:: Hollow Drill Steel, Integral Drill Steels, Tapered Drill Steels, Tapered Drill Bits etc.HandHeld Rock Drills.Top Hammer / Percussion Rock Drilling Tools: Extension Drill Rod, Shank Adaptor, Coupling Sleeves, Thread Button Bits.Rock Bolting Rods and Bits.Blast Furnace Tapping Rods and Bits.Down The Hole Drilling Equipments: DTH Hammer & Bits.Tricone Roller Bits for Mining & Waterwell Drilling Industry.