7.5 in Spacing, Double Shoot, Auto-Rate Control, Variable Rate Control, Sectional Control, Seed Monitor, Case Precision Air 3580 3 Compartment Tow-Behind Air Cart, Single Fan, 8 in Auger Loading System, 73x44.00-32 Front Tires 73x50.00-32 Rear Tires, Wireless Blockage Sensors, 580 Bushel Seeds