The Easy People Snowskate Universal Snow Ski Kit come in packs of 2 or 4. They are compatible with Stunt Scooters, Skateboards, Longboards to easily switch your summer rides into winter rides. The Snowskate Universal Snow Ski Kit consist of high quality plastic for lightweight durability. For longboards and skateboards they attach to the trucks the same way wheels do, they also replace the wheels on the Stunt Scooters. The materials we chose create strength, durability and lightness not to interfere with your ridding experience street, park, cruising, downhill. It is a new technology with front and back lip. A leash is also available for the Snowskate decks to prevent losing your board.