Prepare tubes of caulk, sealant, and adhesive for use with these two-bladed cutters. To open a tube, twist the cutting blade around its threaded tip. To cut an angled opening in the tube’s nozzle, tilt cutters and slice with the trimming blade. Safer than a utility knife, these cutters have openings that serve as safety guards and also keep tube and nozzle tips secure for clean cuts.