The double ball adapter is connected by an aluminum alloy rod. TPU over-molding ball head, non-slip and wear-resistant.

The 17mm (0.67 inch) ball joint compatible with Garmin GPS mount 17mm swivel ball mounting pattern.

The 1 inch (25.4mm) ball joint compatible with RAM Mounts B size 1'' ball double socket arm.

Widely used on bike & motorcycle phone holder, navigation brackets and other electronic equipment mounts.

This Cellet Ball 25mm (1-inch) to 17mm Dual Ball Mount arm is made out of a aluminum body with composite material and is compatible with all industry standard 1 inch / 25 mm mounting arms.

Commonly used as an converter other industry standard 25mm (1-inch) dual ball mounts / arms to any industry standard 17mm bracket including Garmin GPSand iBOLT smartphone holders. Use with any other 1-inch (25mm ) B size industry standard compatible mount.

With the dual ball adjustments, this mount allows you to have the flexibility of rotating your device 360 degrees. Converts a 1-inch/B Size/25mm Mount to a 17mm mounting pattern for Garmin GPS, iBOLT Phone holders, or any other 17mm mounting pattern device.

Length of this adapter is 2.5 inches measuring from one end of the arm to the other and is made out of sturdy composite material.*Mounts, holders, and devices sold separately