The Mansfield 77 chrome trip lever is designed to fit the Mansfield tank models, 3916, and 2916. The lever comes complete with the reverse thread lock nut to secure the lever to the tank. Reverse thread means you will turn it to the right to loosen it, and left to tighten it. The Mansfield 77 trip lever is an all metal design. The only plastic components being, the lock nut, and the threads for the nut.
