275 Ib. capacity drum holds up to 24 gallons of water. 12 HP or larger tractor required to pull. 78 steel spikes penetrate ground to 2.5" (Spikes are 2.75") Aerating helps your lawn breath and get more nutrients into the soil. 36" to 40" working width Drum can be filled with water for additional weight, Manufacturer: Swisher Mower & Machine Company