This Blue Circle ready to use Postcrete is a ready-mix Portland cement with a blend of selected sand, cement and additives formulated for fixing all types of wooden, concrete and metal posts. It comes in a convenient weatherproof and tear-resistant plastic bag. Easy to use, just add water. Rapid setting (around 5 to 10 minutes), no mixing required. Weatherproof after setting. For exterior use. Conforms to BS EN 9001 and ISO 14001.