3M™ Reinforced Filler PN 05877 is a two component, resin rich filler formula, containing milled fiberglass and packaged in a 297 ml Dual Cartridge System. 3M™ Reinforced Filler PN 05877 offers excellent adhesion to steel, galvanized steel, aluminum, E-coat, sheet molded compound (SMC), fiberglass (FRP), concrete and wood substrates, and provides additional strength when deeper fill and gap spanning capability is needed. 3M™ Reinforced Filler PN 05877 is designed to be used with the 3M™ Dynamic Mixing applicator (PN 05846).