Hook-and-keeper door holder keeps your trailer / RV door open while you're loading and unloading No need to get a friend to hold the door or find something to prop the door open Ball-socket connection provides added flexibilty when latching and unlatching Durable Polyethylene plastic construction won't scratch up your trailer like metal holders No Screws Included Keep your trailer door open while you're loading and unloading with this T-style hook-and-keeper door holder. Plastic construction is durable and won't scratch up your trailer. Features: - Hook-and-keeper door holder keeps your trailer / RV door open while you're loading and unloading - No need to get a friend to hold the door or find something to prop the door open - Ball-socket connection provides added flexibilty when latching and unlatching - Durable plastic construction won't scratch up your trailer like metal holders