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Amazon.com: BRCOVAN Aluminum Alloy Mount Base with 1'' TPU Ball & 10mm Mounting Hole, Angled Bolt Head Adapter Ball Base Compatible with RAM Mounts B Size 1 Inch Ball Double Socket Arm :
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Amazon.com: RAM Mounts Ball Adapter with AMPS Plate RAM-B-347U with B Size 1" Ball : Everything Else
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