N Gauge BR Mk 1 & MK 2 a & b Roof Shell Vents suit Graham Farish
£4.38
Graham Farish Mk2a & b roof shell vents. You will need to study the layout of a Mk2 a or b roof then mark and drill. with a 1.2mm drill as per prototype. These have been designed to convert your older Poole or early China Mk2s into a Mk2 a or b.
