End clamp 16 MM are designed to provide a strong grip ,Grips tighter as tension increases. Easy to install. drip irrigation system depends on reliable, leak-free connection fittings to keep the system connected together. constructed of durable sunburn-resistant and chemical corrosion resistant materials to assure long-term usage. Constructed of highly durable UV and made of high quality plastic. Can be reused in indoors as well as outdoors.