2-Part polyester finishing and blending putty. Includes ZNX-7® for adhesion to galvanized metal, aluminum, steel, SMC, and O.E.M paint. Extra-thin formula spreads smoothly. Easily fills grind marks, pinholes, uneven surfaces and other MetalWorks® body fillers and glazing putties to enhance their ease of working. Sands easily. Pinhole-free. Helps prevent staining or bleed-through when used under basecoat/clear coat paint systems. Blue cream hardener included.