Propane Bottle / Tank Shaped Magnets - Outdoor & Car Magnets 30 Mil for your promotions and gain lot of new customers in just a few days. As these custom printed magnets are UV safe, fade resistant and water repellent, you can use them for outdoor promotions without the risk of damaging due to the external weather conditions. Order these custom miscellaneous shaped magnets today and enjoy our free full-color printing and free digital proofs.