For cinnamon tube,the thickness is 0.2~0.8cm .Outer surface grayish brown, slightly rough, some visible grayish white markings; and The inner surface isreddish brown, slightly flat, with fine longitudinal lines and oil marks.
The Radio Tubular Motor For Roller Shutter has Electronic limit and with receiver inside. Load capacity from 0-2KG. It’s suitable for 38mm accessories.