RAM® Composite Round Plate with Ball & Hardware for Garmin GPSMAP + More RAP-B-139 The optically clear membrane provides

The optically clear membrane provides the best tactile screen operation and viewing

The RAM-233U rail kit consists of a U shaped rail adapter that connects to a round 2

The RAM-247U-15 consists of a 1

The RAM high strength composite rail mount consists of the 1" diameter ball and socket system with universal diamond base

625" square plate with a 75mm X 75mm VESA hole pattern and SHORT length double socket arm

RAM® Composite Round Plate with Ball & Hardware for Garmin GPSMAP + More RAP-B-139 The optically clear membrane providesThe RAP B 202 G1U consists of a 1" diameter rubber ball connected to a composite 2. 5" round diameter base. This mount has pre drilled holes, including the universal AMPS hole pattern. The included hardware is compatible with Garmin GPSMAP 172 250 devices.