1、Powerful Function: Adjustable slot fits most outboard engines. This lock prevents outboard motors from being stolen and also prevents the clip from coming loose. 2、Key Safety Design: Must be parallel to remove key to prevent accidental loss at sea. Features yellow sponge block and water resistant cover to better prevent seawater intrusion. 3、Quiet and Stable Operations: Internal sponge linings in both parts eliminate vibrations and noises, giving you a convenient and reliable offshore sailing experience. 4、Water Resistant Installation: Install key downwards to prevent water from entering. If installed upwards, water may get trapped in the lock and U shaped channels at the bottom. 5、Versatile Marine Usage: Portable and high grade outboard engine lock suitable for boats, sailboats, fishing vessels, and yachts. Polished stainless steel construction for long term use in saltwater.