Easy to handle. Unlock the kite line winder, connect the kite with the swivel clip, stop the line with the lock, little kids could handle it by themselves. . Waxed twisted line (60lb x 600ft) allows you to fly larger kites higher. The ring line guide and the thicker cord (diameter: 1.2 mm) ensure that the bobbin is not easily tangled. . Smooth rotation with less noise. High-quality 6-speed captive steel roller bearings ensure the kite tailpiece rotates smoothly and hassle-free. In the meantime, you can use it for years. . High quality ABS plastic, which makes the winder more transparent and firm. Hardly deformable by sea water and glare. Perfect resistance to falls / hits. Children just can't break it. . The diameter of this roll winder is 18 cm. It is suitable for children, young people and people whose palms are no wider than 8 cm. .