This is a USC16200 Pro7 Lightweight Filler. Premium, ultra-smooth. easy spreading & easy-sanding lightweight automotive body repair filler. Manufactured with all multi-layer paint systems resulting in a formulation which is easy to spread, quick to sand & provides maximum adhesion to all galvanized/zinc-treated surfaces. Stain-free, tack-free & pin-hole free for excellent repair results every time! Blue cream hardener included.