A gondola with the end planks removed. For long loads such as pipes or logs. There are supports for a handbrake wheel and shaft (not supplied) at one end (of the side planks) that need to be drilled out. Based on the rolling stock of the Ohio River & Western Railway. This model is designed for HOn3 couplers (Kadee 714).These will have to be glued in place as the floor is only 1mm thick (unless you have a better idea).
Now with separate brake parts (air and vacuum), to be found attached to the bolsters. Remove these and fit the appropriate one.