Kaeser Compressors offers a complete new line of air tools that includes paving breakers, rock drills, rivet busters, trench diggers, chipping hammers and backfill tampers. Ergonomic paving breakers are available in 50-, 60- and 90-pound models. Kaeser says the valves, pistons, and other moving parts of all MobilairTools are heat treated to a specified Rockwell hardness for durability.