Tie Tensioning Tool tightens nylon ties to fiberglass duct take off connections faster, easier and with better quality than can be done by hand. It features a manual, easy to operate, cutting mechanism and comfortable gray vinyl cushioned grips. When the tie is tight, a simple pull of the lower handle causes a blade to engage and cut off the excess tail of the nylon tie. Made with a clean, black baked on enamel wrinkle finish, this tool is made to weather the elements and stand up to abuse on the job. Tie Tools are designed to work on standard 175 Ib. ties as well as thinner 125 Ib. ties. A reduced pinch point handle closing ensures peace of mind and reduces injury.