Circular 38mm (1.5 inch) Ball to 4-Hole AMPS Adapter

Arkon APD2MAMPS25 Metal Diamond 25mm (1") Ball to 2-Hole AMPS Compatible Adapter

Arkon RM080AMPS-MET 80mm Windshield Suction Mount with Metal 4-Hole AMPS Head

Arkon 88mm Diameter Round Heavy-Duty Magnet Base with 1/4”-20 Camera Mount Bolt

4-Hole AMPS to 38mm (1.5 inch) Ball Adapter

Metal 4-Hole AMPS to 38mm (1.5 inch) Ball Adapter

Arkon SP1420MAG 65mm Diameter Round Heavy-Duty Magnetic Base

Circular Metal 38mm (1.5 inch) Ball to 4-Hole AMPS Adapter