JS INTERNATIONAL is specialized in the supply for quarrying, mining, tunneling, construction: -Rock drilling equipment and accessories (Chisel/cross/button bits, integral/tapered drill rods, pneumatic jackhammer, gasoline hand-held rock drills)  -Tungsten carbide inserts -DTH hammer and bit; milled tooth and TCI tricone bits -Rock bolts and disposable drill bits  -Paving breakers tools and pick hammer tools, -Diamond cutting blades, diamond core bits, etc.