Secure flex couplings in place with a leak-resistant seal using the 3.625 in. - 16 in., 51-1/2 in. Length Clamp. This easy-fit clamp fits over compatible flex coupling end to secure it onto pipe end. Tighten clamp with a screwdriver, 5/16 in. nut driver or socket to 60 inch-lbs. pounds torque. Clamp provides a rust-, chemical-, leak-, and corrosion-resistant connection when installed properly. Durable flex coupling clamp is made of series 300 stainless steel.