SP25MM9A is a versatile angled adapter that allows you to mount a 25mm ball mount or pedestal to motorcycle mirror frames and other areas having a 9mm bolt head. (Mounts, holders, and devices sold separately.) Secure the angled adapter onto any area with a 9mm bolt head by threading the bolt through the adapter. This adapter is a great alternative for those tight areas on a motorcycle or other vehicle where a drill base or suction mount won't work.