RAM Mount D Size 2.25" Ball on Round Plate w/AMPS Hole Pattern [RAM-D-254U]
RAM Mount Large Cable Manager f/2.25" Diameter Ball Bases [RAP-402U]
RAM Mount Mixed Combination Pin-Lock Security Nut & Key Knob f/2.25"/3.38" Diameter D/E Size Arms [RAP-S-NUT5U]