The lightweight K55-28B fixed non deceleration system adopts high-quality engineering plastics such as PA66+GF/POM/PC/ABS

Structural features:
1. Using high-quality engineering plastics such as PA66+GF/POM/PC/ABS, and adopting metal core core technology; 3. Using imported torsion springs made of piano steel wire; 4. Adopting a two-stage rebound tail system; 5. Opaque design; 6. Reserve installation holes for beads.
Performance characteristics: 1. Reduction ratio 1:1; 2. The no-load tension is less than 0.3KG; 3. The maximum rated load is 5kg, and it is used for fabrics less than 7 square meters.
Mainly used for indoor shading
