1. professional manufacturer for roller shutter. 2. OEM,ODM is welcome. 3. materials,colors and driving modes are optional.

TOMA Roller shutter components

The sizes of galvanized steel octangle axle are 40mm,60mm,70mm and so on . The round tube's sizes are 80mm,114mm,165mm,219mm and so on . And some idlers are used for tubes. 

And some packages and tubes' pictures as follows:

Tube