Unique, multiple hole design gives maximum convenience in hanging bikes. Female adapter not required! Accommodates different bike styles and sizes. Easy on/off design, pulls out when not in use. State-of-the-art rust resistant, powder-coated silver-black “Picasso”™ finish. Features a lock pin locking mechanism for extra strength and security. Fits 4"-4-1/2" RV bumpers without a rear-mounted spare tire. Includes hardware, instructions and tie down straps. 1 per box.