Battery Box Black Paint is an asphaltic coating used to provide protection from battery acid in battery boxes and compartments. It is generally applied with a brush or roller to any metal area that may be exposed to leaking battery acid.
Great product but $5.00 plus $6.95 shipping is out of the question for a balsa toy glider.
Shipping is calculated by weight of the order & distance from Michigan (our location) to you. The Balsa Wood gliders are fragile, so we ship them in boxes to help protect them from breaking. We cannot control what the carriers (USPS, FedEx, or UPS) charges for shipping labels, but we try our best to keep our prices as low as possible to help offset shipping costs.