Use for blister repair, structural repair on all fiberglass boats and all PWC. This viscous putty permanently repairs damaged fiberglass, wood, metal, aluminum and some plastics (ABS, PVC, Lexan, Cyclolox). Adheres to Styrofoam without burning. White mixture clings to vertical surfaces without sagging. Easy 1:1 mix ratio. Kit includes fiberglass screen, epoxy resin and hardener pastes, mixing sticks and a squeegee.