CAPACITY - Hold up to 2 pairs of skis or 1 snowboard, and in the summer is a fishing rod holder, wake board holder, or longboard holder. Comes with 1 set of 2 lockable arms with mounting hardware and 4 keys. MULTI-PURPOSE - In the winter it can hold up to 2 pairs of skis or up to 1 snowboard. In the spring and summer - easily carry longboard skateboards or fishing rods. UNIVERSAL MOUNTING - Universal mounting to most roof racks with easy installation. Suitable for all vehicles. EASY RELEASE HARDWARE - Easy release and easy locking for gloved hands. Rubber grip profile to protect skis, snowboards & fishing rods. Master Key compatible. HEAVY DUTY - Heavy duty aluminum construction, rust & corrosion resistant. Dimensions: 10' internal / 16' external. EASY INSTALLATION - Simple installation with universal mounting brackets included. Fits most elliptical, square, and round shaped roof rack cross bars, but not all. GLOVE FRIENDLY - The release mechanism allows you to open and close the carrier with gloved hands in the winter, which is a huge benefit after a day on the slopes. All you do is snap it shut, lock it for protection and you're on the road.