RAM Rail Clamp Ball Base for 32 to 47mm Rails (D Series 2.25" Ball)

RAM-D-271U-12 RAM® Rail Clamp Ball Base for 31.75 to 47.625mm RailsFeatures Clamping base ideal for posts from 31.75mm to 47.625mm in diameter Included D size 2.25" RAM® rubber ball allows for connection to any D size RAM® double socket arm; ball and socket technology allows for near-infin