Coupling, 1" Beaded Pipe, "A" 1-7/8" X "B" 1-1/16", 35 in-lbs MAX Torque, 7/16" Hex Nut Size. Complete coupling assembly consists of a 300 series stainless steel outer band with T-bolt, a Viton liner, and a PTFE sealing ring. Couplings allow for a maximum deflection of 4¿. PLEASE NOTE: TIGHTEN ALL COUPLINGS TO THE PROPER TORQUE SETTING.