Rockmore International introduces the second model in the new T-Series DTH hammer line — the ROK 550T. The new T-Series design hammers utilize drill bits with standard shank connections without the plastic blow tubes/foot valves. The ROK 550T is a 5-inch class model and a tubeless hammer that accepts the industry standard bit shank model QL50, but with the blow tube/foot valve removed. Rockmore International is a manufacturers of percussive rock drilling tools. Products include drill bits, DTH bits and hammers, extension and tunneling rods, integral and tapered rods, shank adapters and other drill tool accessories. With manufacturing centers in two hemispheres and distribution centers on nearly every continent Rockmore International provides a wide range of tools to mining, construction, tunneling, quarrying, and water well projects.