1. Use PA66+GF,PC,high-quality engineering plastics;
2. Metal Core Technology
3. High-quality piano wire spring;
4. Two-level spring back type idler
5. Light-proof design
6. 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 set/ctn