YYT29 Air-leg full hydraulic rock drill, drill with high speed, low power consumption, drilling light noise, less failure, safe and reliable, simple to configure, easy to move and so on. The efficiency of other rock drilling machine 5 to 10 times, and the power consumption of other rock drill 1/3. Drilling performance: suitable for soft rock, hard, semi-hard type of rock. User known as "the best of traditional pneumatic rock drill alternatives".