Campbell 0.66 in. D X 3.94 in. L Polished Stainless Steel Spring Snap 320 lb

Ideal for hanging keys and other utility items from belt. Fast and easy to connect and disconnect. Do not exceed the working load limit. Do not use to support human weight, for playground or athletic equipment or as a safety device.Do not use for overhead lifting or hoistingIdeal for marine, industrial or agricultural usesThe snap's user can easily press the lever, which then causes the spring gate to retract inwards and release the attached line