The More Birds 18 in. Clamp-On Deck Hook positions your feeder away from your deck railing for close viewing and a cleaner deck. Its durable, solid steel arm extends 18 inches from the deck rail and is powder coated with a black finish to resist weather. The Clamp-On Deck Hook fits onto horizontal railings up to 2 in. thick to conveniently hang feeders and plants. Simply clamp the hook onto your deck rail by tightening the hand knob, with no tools needed!