Buybits 25mm Ball Motorcycle Mount Base for Ducati 848 evo (sku 11780) Motorcycle Mount for the Ducati 848 evo (2011) This mount attaches to the end of the handlebar casing offering a unique central mounting option for phone / GPS mounts Uses a 1 inch / 25mm ball base & can be used inconjunction with bike mount manufactures using this configuration Not your usual handlebar mount, this stem is adjustable and fits holes 13.3mm - 14.7mm (0.52 inch - 0.58 inch) in diameter. The light-weight Aluminium split shaft expands to fit the wall if the bar. Use an Allen Key to tighten creating a secure fit. What do I get? 1 x 13mm mount with 1" (25mm) ball base