Sakrete RAPID POST concrete mix offers a fast setting time for fence posts, mailboxes, and structural repairs. This 30 kg powder mix combines cement, sand, and aggregates in precise proportions; simply add water for immediate use. It sets in approximately 30 minutes, allowing you to complete the job the same day without lengthy drying times. Its gray finish is suitable for most outdoor applications. Ideal for contractors and homeowners who prioritize speed without compromising strength or durability.