Designed to clamp on a quill stem this device holders allows electronic devices to be attached without using precious handlebar space. Two different diameter clamp sizes allow for fitting to 1" and 1 1/8" quill stems with the 35mm version also clamping over some 1 1/8" Ahead spacers. Adaptable to take Shimano Steps or Bosch E-Bike displays as well as 22mm diameter bar mounted devices.

There are 2 fitting types:

- 25mm clamp on - this fits 1" quill stems
- 35mm clamp on - this fits 1 1/8" quill stems