This hard plastic hoop winder will make hauling in 500 ft of line faster and easier in high winds. Every loop of the winder brings in about 1 ft. of line. The small size winder fits the hand perfectly and is great for kids to use as well as adults. The 50 lb. twisted dacron line is more resistant to damage, smoother and does not tangle as much as twisted nylon lines do. Most kite fliers will choose dacron lines over nylon lines once they have tried dacron. Be sure not to loose that special kite due to poor line quality.