Description: 【Complete Replacement Kit】: This package includes 1 sturdy belt winder box and a full 5 meter roll of quality replacement webbing strap, providing you with everything needed for a full strap renewal, ideal for replacing worn or broken roller shutter belts 【Simple Strap Replacement Guide】: Follow our clear 3 step process to replace your old strap first easily, pull out the old strap and spring then, attach the new strap using the spring hook, and finally let the mechanism retract the new strap for immediate use 【User Friendly Spring Mechanism】: Designed with a simple spring and hook system, this roller shutter winder makes strap replacement straightforward, no more struggling with complex mechanisms or needing professional help for a simple fix 【Easy Installation】: The entire installation and strap replacement process requires no tools at all, allowing for a quick setup that anyone can complete in just a few minutes, ideal for DIY homeowners 【Sturdy And Reliable Construction】: Built from sturdy material, this organizer box is compatible for most manual roller shutter models, offering a great and long term solution to keep your strap neatly stored and easily accessible Specification: Material: Plastic, Hardware, Nylon Rope Size Chart: 17.25cmx12.5cmx2.3cm/6.79inchx4.92inchx0.91inch Package Includes: 1 Roller Shutter Winder Box Note: Please allow slightly errors due to manual measurement and different monitors.