Atlas Copco’s water flushed, pusher leg mounted rock drills are designed for driving
drifts and tunnels with a small cross section. They are intended for use for hole
diameter range of 27 to 41 mm (1-1 5/8 in) with Hex 22 (7/8”) rotation shank as a
standard.

When used with Atlas Copco tapered button bits, penetration rate will improve some
25-50 percent compared to conventional integral steels. And they have three to five
times longer service life.

Please have a look at the Pneumatic Rock Drills brochure to view the full range.