The clamp base will accommodate rails in diameter from 0.625" to 1.25". The 1" rubber ball is at a right angle to the plane of the mount so when connected to a rail, the ball sits parallel to the rail.
This RAM high strength composite cradle is designed to hold the following devices:
Garmin Montana 600
Garmin Montana 650
Garmin Montana 650t
1. Open access to all electronic ports and camera
2. Patent pending roller design for super smooth placement and removal of the GPS
Material: High strength composite & powder coated marine grade aluminum