1. Use PA66+GF,PC,high-quality engineering plastics;
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:1:1.5
No-loading tension is less than 0.3KG
Max Load 6KG,Use for roller blinds less than 8㎡
70 set/ctn