Features: The outer casing is made of cast aluminum and precision die-casting. It is cast in one molding process and is durable. Configurable stabilizer screws, new gaskets, more stable, durable and strong. The new comfortable roller prevents aging and the roller is smooth. With high-quality iron chains, it is not easy to rust and has a longer life. This product is suitable for double-layer membrane greenhouse and external top film, single-layer film greenhouse top film. Specifications: Condition: Material: Aluminum Speed ratio: 4:1 Weight: Approx. 2099g / 74oz Size: Approx. 22.5x17x15cm / 8.9x6.7x5.9in Large roll height: Approx. 1.5m / 4.9ft Large reel length: Approx. 120m / 393.7ft Chain length: Approx. 3m / 9.8ft Package list: 1 x Greenhouse Manual Film Coiler 1 x Greenhouse Manual Film Coiler Handle 1The outer casing is made of cast aluminum and precision die-casting. It is cast in one molding process and is durable 2Configurable stabilizer screws, new gaskets, more stable, durable and strong 3The new comfortable roller prevents aging and the roller is smooth 4With high-quality iron chains, it is not easy to rust and has a longer life 5This product is suitable for double-layer membrane greenhouse and external top film, single-layer film greenhouse top film Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.