Help make your outboard less attractive tothieves, and also keep it from vibrating loose while running. The vinyl-cladsteel tube slides over the mounting screws and is secured with a hardened brasspadlock. Padlock is recessed inside the tube to protect against cutting Comes with two keys*Fits: OMC 6-30hp, Merc/Mariner 8-25hp, Yamaha9.9-40hp, Suzuki 8-13hp. Also fits other small outboard engines with a hole inthe transom bracket for mounting the engine (stainless bolt included in set).