Bags and covers Covers accessories Ortlieb Handlebar Adapter For Smartphone Case. The rotatable and easy-to-operate handlebar mount allows you to attach the ORTLIEB Smartphone-Case (art. no. D2601) to all handlebars or handlebar stems with a diameter of up to 34. 9 mm. Simply attach the mount to your handlebar using the robust plastic ratchet strap and then securely attach your smartphone case either vertically or horizontally to the mount using the two clamps. Specifications : Height : 0 in - Width : 0 in - Weight : 1. 7 ozTechnology : Sports made in Germany- PVC Free