Great adhesive product for most materials, waterproof, superior bonding Professional use product. *Seller highly recommends buyer use a qualified Auto Glass Installer for use of this product. 10Tubes (1 Case) A Dow / Dupont Chemical OEM product For use on all Auto Glass Installations Primerless Urethane - no primers to glass required Meets all federal retention and roof crush tests. If bare metal is exposed or urethane is to be applied to plastic or encapsulated parts then Dupont Primer #5504G must be applied to those areas for safe adhesion. () 26 to 1 Ratio Chalk Gun or Power Gun needed to dispense product