1 set of 10 bolt axles from a 70s square body K10 pickup plus a early 90s rear end. The original set as well as all these older pickups have a 2" wider front axle than the back axles and a 90s rear end is 2" wider than the 70s, all axles have 3.73 gears as we were going to build a mud bogger truck and wanted the same track width front to back.