DRYLOK Fast Plug is a rapid-setting hydraulic cement that expands as it sets to stop active water leaks in seconds. Ideal for use on concrete, masonry, stucco, and stone surfaces. Contains 4 lbs of hydraulic cement. Sets in 3–5 minutes. Compatible with DRYLOK waterproofing products. Lowe's item #41333, model #773267. Full, sealed, and in original packaging.