Rovner cap #4, plastic cap for Rovner ligatures, fits for: 3R, 3RL, 4R, 4RL, 4RS model Dark, L9, L10 model Light, C-3R, C-3RL model MKIII, E-3R, E-3RL, E-4R, E-4RL, E-4RS model EVO5, SS-3R, SS-3RL model Star Series, V-2R, V-3R, V-3RL model Versa, G-3R, G-3RL, H-3R, H-3RL model ML