Flex Paste 9 oz cartridges are designed for use in a caulk gun. Before loading into the caulk gun, be sure to follow the steps below.
1. Unscrew the cartridge tip.
2. Remove the nub with a sharp knife. Try not to remove any of the screw threads.
3. Cut the cartridge tip in the center or to your desired thickness.
4. Screw on the cartridge tip and you’re ready to go!