2K Acrylic Urethane Primer is a premium lead/chrome free two component acrylic urethane primer surfacer. 6561/6564 provides exceptional fill and build and provides a base which yields excellent top coat hold out, gloss and D.O.I. (Distinctness of Image). 2K Acrylic Urethane Primer sands easily wet or dry and can be directly topcoated with alkyd enamels, acrylic enamels, lacquers, acrylic urethane enamels and basecoat clearcoat systems.