An air cargo device for facilitating the movement and retention of unit load devices on an air cargo deck includes a base member on which are mounted a caster roller, a guide and a restraint. The guide and the restraint are coaxially mounted and together occupy one of three positions: both the guide and restraint being recessed; the guide raised with the restraint recessed, and both the guide and restraint being raised. One end of the base member is provided with retractable tension studs suitable for mating with a portion of a seat track, while the opposite end of the base member is provided with shoulder bolts for mating with a lock tray. This permits the device to bridge between the two types of cargo floor fixtures.