ABS housing, designed for roller shutter belts with a width of 14 mm. Surface screw-on belt winder: Operation is simple and convenient, it attaches to the entrance of the shutter belt and the shutter can be pulled without great effort. Strap guide with brush reduces friction between the strap and the aluminum alloy guide rail, prevents lint, cleans dust, helps prevent pests, and extends the service life of the strap. Includes 5 m belt and 5 m mini belt (14 mm) in gray color, already rolled up and pre-tensioned, with hinge system. Dimensions: roller shutter belt winder: 172.5 x 125 x 23 mm, strap 14 mm x 5 m. Package includes: 1 x belt winder with 5 m belt, suitable for roller shutter belts with a belt width of 14 mm. The tape winder is suitable for surface mounting and offers long service life. After being screwed on, the strip roller can be rotated 180 degrees. Simply fix the roller shutter winder to the window frame or wall (surface mounting). Assembly instructions: Fully close the roller shutter. Remove the old case from the belt winder and remove the old strap. Mount the new belt winder on the wall or window frame. Pull the strap from the belt winder. Open the belt winder and attach the roller shutter band to the spring drum. Carefully loosen the spring drum lock and let the roller shutter band wind up slowly. Close the band winder. Dimensions: 23 x 172.5 x 125 mm, webbing 14 mm x 5 m.