A steel 1:4 gearbox. Commonly used for greenhouse screen installations or awnings. This model is designed with a white plastic eye.
This model has an X = 65mm (see images).
Note – this gearbox has a stopping point, at which point it cannot be turned further. This is to prevent the fabric folding incorrectly.
Also available in 1:3, 1:6, 1:7, 1:9 & 1:15.