The ClickShield Cord Lock is the fast and inexpensive way to weatherproof any power cord, while also eliminating irritating and dangerous disconnects. The durable all-weather plastic shield has a unique ratchet mechanism; when you hear the 'click' you know it's securely locked. The internal gasket assures a water-resistant electrical connection. The ClickShield is great for Christmas lights or other electrical holiday yard decor, power tools, or outdoor equipment of any kind. ClickShield is the essential outdoor electrical accessory.