A two-pack polyurethane quick drying primer cum surfacer with excellent filling & sanding properties for application on wood (hard & soft) & wood substitutes like particle board, veneer, plywood etc. The formulation contains mixed isocyanate hardeners, inert & smooth sanding extenders. When used in combination with Maxiwood 2 PK PU Topcoat, the product gives an extremely rich finish. Presence of plasticizer in the formulation of Maxiwood 2 PK PU Primer Surfacer make the product flexible enough to withstand woods dimensional variation thus enhancing adhesion.