Zundapp KS 750 Metal Transport Boxes (designed to be used with Academy kits) Academy's Zundapp KS 750 / Pz.IB kit offers just the leather saddlebags to the motorbike. At least starting with the latter half of the war, metal-type boxes were in use instead of leather bags, and these were also more durable, easier to manufacture and cheaper. Our set offers these metal type boxes with nice detail overall.