7655 air leg rock drill is a high efficiency rock drilling machine.It’s widely used in mining and roadway drivage of drilling operation.Also it’s a important tool for railway, water conservancy, construction and national defense project.It can be used with type FY200B oiler and type FT160A (FT160B,FT160C)air leg.It can used for drilling the medium hard or very hard rock for wet drilling, drilling horizontal and inclined hole, unload gas legs can also be installed in trolley out of use.