Heat weldedProvides a tight seal & smooth clamping surfaceEliminates the need for bridge clampsAvailable on T-7, T-7SR, LT, HT, LD, MD, HD, VHD, SDAlso available for our Flexaust, Flex-Tube, Heat-Flex, Flex-Lok & Springflex; hoses. Neoprene coating also available.