... Roller Blinds Components 1. Up Rod: Aluminum Alloy 2.Down Rail: PVC, Aluminum Alloy 3. Ball Chain: Placstic, Metal,stainless 1.specifications name Roller Blinds ... , 1.5mmDiameter28mm, 38mm, 50mm, 70mmUsedRoller blinds, Shangri La blinds, Zebra BlindsUp Rod: 28mm, 38mm, ... 50mmUnit Control Down Rail: PVC and Aluminum Alloy) 28mm, 38mm, 50mm Up tube of roller blinds ...