Ram Mounts Double U Bolt Ball 1" 1in. The Ram Mounts Double U Bolt Ball 1" is made using the long lasting and reliable materials you have come to anticipate from this awesome organization. For a good way to make sure you are using some of the best gear the marine community has to offer purchase the Ram Mounts Double U Bolt Ball 1". Package Contents: Ram Mounts Double U Bolt Ball 1" Ram Mounts RAM-B-235U: Double U Bolt Ball 1" 1in