Contents:1 x 4ml Bottle Z-Prime PlusZ-Prime Plus is a single-component priming agent used to enhance adhesion between indirect restorative materials and composite resin cements.Z-Prime Plus significantly enhances bond strengths to Zirconia, Alumina and Metal substrates more than any other surface primer on the market due to its unique combination of two active monomers, MDP, a phosphate monomer, and BPDM, a carboxylate monomer. This combination of primers gives Z-Prime Plus a synergistic effect resulting in its high bond strengths.