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A ready-to-use blend of selected sand, cement and additives formulated for fixing wooden, concrete and metal posts. A durable, ready to use product formulated for fixing wooden, concrete and metal fence posts. No mixing is required - simply pour water into the post hole and add Postcrete. It sets quickly in 5-10 minutes and is supplied in a weatherproof, tear resistant plastic bag. Note that the minimum working temperature for Postcrete is 3°C.