Sika, 33 oz, post fix fence post mix, self-contained package that replaces two 50 lb bags of concrete mix, simple & fast application, just roll, mix & pour, no water or special tools needed, fast setting in 3 minutes, high strength, provides convenient & quick support of many types of posts including wood, pvc, steel or concrete, 2 component, pre-proportioned polyurethane resin, mixed in the bag to produce expanding foam for supporting & backfilling fence, mail box, gate, & signage posts, voc compliant in all 50 states.