0.67"(17mm) ball mount accessories bicycle and motorcycle phone mount handlebar clamp mount u-bolt base 17mm ball mount extension bike motorcycle handlebar holder clip handlebar u-bolt mount base. 1.This ball mount base is compatible with Ram mount handlebars or rear-view mirror bars of motorcycles,ATV and bicycles. 2.Fit for 0.67'' Ball Socket arm Systems. Compatible with RAM Mount/double socket arms as well as digital electronic device mount and other bike cell phone holders. Fit for handlebar diameters from 0.5" to 1.26". Three rubber ring inserts diameter are: 0.5", 0.87", 1". Bike handlebar mount base diameter is 1.26"( when without sizing inserts ). Ball head diameter: 0.67"(17mm). Ball head adopts CNC molding, with anti-slip properties Ball mount material: High quality aluminum alloy with TPU. Ball main material: aluminum alloy. Note: Please allow a 1-3mm inaccuracies due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.

?The package comes with three rubber ring inserts to provide a snug fit and protection of the mounting surface. Rubber rings diameter are: 0.5'' / 0.87'' / 1''. It fits to most bike/motorcycle/ATV handlebars. ? 0.67" ball mount handlebar base 17mm ball mount compatible with RAM Mounts and socket arm component, including double socket arms, navigation mounts, action camera mounts, bike & motorcycle phone mount holders and others electronic device holders. Suitable for bike, bicycle, motorcycle, stroller, mountain bike, dirt bike, road bike, golf cart, electric scooter, ATV, etc. ? Handlebar mount ball made of high quality aluminum alloy.It is durable and reliable in the most demanding environments. The ball joint adopts CNC-molding design, with anti-slip performance.This 0.67" ball mount holder fits for handlebars from 0.5" to 1.26" in diameter. ?ball mount utilizes rubber-insert and lockbolts to prevent loosening in high vibration for mounting to motorcycle,ATV or bike handlebars as well as other round rails within the insturcted dimensions diameter. ?With this 0.67" (17mm) ball mount adapter mounting kit, you can 360°rotate your Gamin GPS, camera mount or phone holder device , it is suitable for outdoor riding and photo shooting.Small shape and compact size, it's very easy and convenient for you to take and carry.