... and pneumatic tools in China a kit Air-leg Rock Drill (YT24,YT28,TA25)ISO9001Designed for rock drilling in mines, railway, cummunication and ... medium-hard or hard rock. ·Grouped control mechanism,quick to start up, with "air on ,water on, air off,water off" mechanism ... its high efficiency, strong flushing and powerful torque. ·SPECIFICATIONSAir-leg rock drillsYT24YT28TA25242624(L/s)≤67≤81≤78Φ34-42Φ34-42 ...