This pool cover roller is perfect to keep your pool cover in place, and thus keep your pool or spa clean. The roller features a slide adjustment mechanism and can easily be moved sideways to the correct position to suit the cover (suitable for covers with a minimum width of 6.6' and maximum width of 16.4'.) It is equipped with 2 wheels with hand knob for easy control. As the wheel crank is turned, the cover glides effortlessly onto the roller with the help of the included cords. The roller is made of corrosion- and weather-resistant aluminium, which is strong and highly durable.