The specialized coupling clamp (product of Aria coupling company) is a tool for sealing the connection of fire hoses to various types of hose couplings. By using the coupling closure, in addition to the strong sealing of the hose connection to the coupling, it does not damage the hose fabric. Ease of opening and closing and high strength against impact are the most important features of this product. This is while the screw connection, in addition to the damage to the polyester fabric of the fire hose, does not have the ability to open and close in the long term. Abset specialized coupling has a certificate of non-leakage test for connecting the hose to the coupling up to 60bar pressure. Codes HC1500 and HC2500, respectively, with internal diameters of 38 and 65 mm, are intended for installation on STORZ couplings, and code HC2500, with an internal diameter of 5.63 mm, are intended for installation on BS couplings.