Fibreglass Evercoat 889 Metal-2-Metal Aluminum Reinforced Filler - Quart Aluminum filled body repair for metal surfaces 100% stain free Resists "compression" when drilling and mounting objects such as door mirrors Waterproof and rustproof, Will not sag bottom nested up into the top of the pan and secured with a plastic tie - images showing how to release the bottom portion of the pan from the top