Tinksky Handheld 20cm Hard Plastic Lockable Kite Line Reel Winder (Blue) Color: blue. Material: hard plastic and metal. Reel diameter: 20cm. The kite reel is very durable and designed for outdoor use, and suitable for flying large kite or parafoil kite. Come with a lock, for easy to operate. The molded handle is excellent and is very comfortable to use for hours.