The N Scale Refinery Detail Kit from Gold Medal Models is perfect for super-detailing tower walkways and ladders on your N Scale Walthers Cornerstone(R) North Island Oil Refinery kit. It has etched-brass replacement walkways and ladders making it easy to give the structure a finescale appearance. It can also be adapted to add detail to your own custom structures. The Refinery Detail Kit is one of many Gold Medal Models N Scale super-detailing parts.