Harlequin's Universal Multi Primer is a unique waterbased primer and undercoat. It can be used on almost any paintable surface. H.U.M.P. eliminates the necessity to use an undercoat as it primes and undercoats in one easy application. It has a low odour. H.U.M.P. can be used on metal, wood, plastics, ceramics and melamine to name a few.