Rupture Seal set of 3. The RuptureSeal is designed to safely seal ruptures fast. Approach the Rupture from the side, outside the path of the flow of liquid. Flip the pin so it is parallel with the nylon tie. Insert the pin into the rupture. Once the pin is in the rupture, quickly let go and drive the plug into the rupture holding it in place stopping the flow of liquid. As you push the plug into the rupture, with your free hand GENTLY pull on the handle. When the handle is fully extended and the clicking stops the RuptureSeal is deployed. (If you pull too hard the handle is designed to release). This item is a must have for quick leak stoppage. Sold as kit.