This 4mm. scale etched brass kit for the LNWR D307 Corridor Brake Third carriage was produced by Chowbent Castings. The Dia.307 carriage is suitable for inclusion in the LNWR Inter-Corridor Set Trains. The kit is.un-started and believed to be complete, although this cannot be guaranteed. Wheels, couplings, glazing, paints and transfers of choice will be required. There is a strip of foam (attached to the inside of the kit box) for insertion in the corridor connections, although no black paper for lining the corridor connections is apparent. There are seating strips and solid un-sprung whitemetal buffers. There is a comprehensive set of notes covering building the carriage, prototypical history and list of references. The kit box is in very good condition and suitable for storing the carriage once finished.