This tee is the brake line distribution block that feeds the entire braking system. The block mounts to the frame and the single master cylinder line screws into the top while the left and right front screws to the sides and the front to the rear screws into the back. These block are often discarded with the old lines. Often these blocks are missing, thrown away, or striped. These are the exact reproduction of the originals down to every detail. They are the correct size, shape and thickness brass.