Compact and tamp down sand and other granular soils with this pneumatic rammer tamper. Rammers deliver strong blows to soil, packing it down up to a 1/4" with each pass. United Rentals' rammer tampers can deliver up to 1,600 blows per minute (bpm). They're easy to use with your air compressor. Backfill trenches, prepare surfaces for pouring concrete or asphalt and more.