RAM Mount 4 Hole AMPS Composite Square Mounting Base with 1" Rubber Ball

RAM Mount 6.25" x 2" Universal Marine Electronics Base Plate with 1.5" Ball

Aluminum 4-Hole AMPS Base Mount with 20mm 0.787 inches Mounting Ball for 20mm...

Arkon XMS 20mm Ball w/ 4-Hole AMPS Aluminum Adapter Plate for 20mm socket mount

RAM Mounts Ball Adapter with AMPS Plate RAM-B-347U with B Size 1" Ball

Metal AMPS 4-Hole Base Mount with 20mm Mounting Ball Strong & Durable

RAM-B-347U Ram Mounts 2" x 1.7" Base w/ AMPS 1" Ball for Garmin Zumo, TomTom

Arkon 25mm Rubber Ball 4 Hole AMPS Plate to RAM Mount Double Socket APAMPS25MM