Air-powered Concrete scabblers are ideal for removing deteriorating, oil-soaked concrete. Also ramping large slab differences, texturing parking deck and wheelchair ramps, producing slip-resistant surfaces, and removing floor coatings. They utilize carbide bits in multi-head configurations to hammer concrete or asphalt surfaces, removing bulk material at penetrations up to 1/4" per pass. Can remove 250 square feet per hour and delivers 1,200 hits per minute for fast surface removal. Requires only 160 CFM at 100 PSI, air for operation.