This set is in 1/700 scale. The individual Multiple Ejector Racks have their own rails to attach to the under side of an aircraft's wing. Each Multiple Ejector Rack has three BLU-107 Durandal bombs attached to it. With 24x bomb racks this kit has 72x BLU-107 bombs. The Multiple Ejector Racks should be cut from the sprue at the top of the rail system.
According to Wikipedia: "Named for a mythical medieval French sword, the Durandal is a anti-runway penetration bomb developed by the French company Matra (now MBDA), designed to destroy airport and airfield runways and exported to a number of countries worldwide. As a simple crater in a runway could be just filled in, the Durandal deliberately utilizes two explosions in order to displace the concrete slabs of a runway, damage that is far harder to repair."