1. Use PA66+GF,POM,PC,high-quality engineering meterial;
2. Metal Core Technology
3. High-quality piano wire spring;
4. Light-proof design;
5. Three-level springback type idler,clutch reserved chain installation holes design.
Clutch Reduction ratio:1:1
No-loading tension is less than 0.3KG
Max Load 5KG,Use for roller blinds less than 7㎡
70 sets/17.92KG