This is a 3D Printed Nylon holder for the campagnolo eps junction box, it replaces a 5mm stem spacer for standard 1 1/8 size steerer tubes. The clip is designed as a one way clip so once the box has been installed it is not intended to be removed. Please be careful during installation as this clip feature is quite fragile during install bit once fitted holds the box very securely. The spacer can of course be removed from the steerer tube if needed.
These holders are available in a wide range of colours and made to order so take around 10 working days to ship.