RAM® Ball Adapter with Hardware for Raymarine Dragonfly - B Size RAM-B-180-231Z-2NUBU The ball gives the cradle

The ball gives the cradle the ability to connect to the RAM arm

5 audio adapter cable

The wing nuts on the end of the screw can be tightened by hand

The RAM-B-189BU consists of a double 3

RAM® Ball Adapter with Hardware for Raymarine Dragonfly - B Size RAM-B-180-231Z-2NUBU The ball gives the cradleThe RAM B 202U RYM1 consists of a 1" diameter rubber ball connected to a flat 2. 5" diameter base. The base has pre drilled holes, including the universal AMPs hole pattern. Included are (3 quantity) (#8 32 x 3 4" PH PD Mach Screws) and (3 quantity) (#8 32 SS Nylock Nuts) that will connect the RAM B 202U RYM1 to the bottom of all Raymarine Dragonfly Sonar GPS devices.