All items are B series (1" ball). Arms are metal, not composite, and arm dimensions are ball centre to ball centre. These are used items but are completely functional. RAM components can be used to mount sat navs and other devices and make for solid yet easily detachable mounts just leaving one ball attached to the bike. Handlebar Clamp Base with M8 Bolts and Short arm (1.75"), plus 75mm M8 bolt - £13 posted to UK address. ************ Short arm (1.75"), Medium arm (3"), Double Ball Adapter and Handlebar U-Bolt Base (NB. the clamp and nuts are not included in the U-Bolt base, I used this bolted directly to my VFR and lost the clamp and nuts) - £22 posted to UK address.
