Swisher 11933 40-Inch-Wide Drum-Style Spike Aerator Drum-style spike aerator efficiently gets air and nutrients into the ground for a healthier lawn 40-inch work width gets the job done quickly 78 steel spikes penetrate up to 2-1/2 inches deep 275-pound capacity drum can be filled with up to 24 gallons of water for additional weight Spikes: 2-3/4 inches; weight: 122 pounds