Clamp-type black cycle computer mount, compatible. - Type: Cycle computer mount - Color: Black - Mounting type: Clamp-on - Compatibility: For cycle computers - Weight: 19.5g I tried attaching it to the vertical extension bars of my triathlon bike, but it didn't work out the way I wanted, so I'm putting it up for sale. It can also be attached to horizontal handlebars. The range of compatible handlebar diameters is quite wide. Thank you for looking.