RAM 1.5" Double Ball Adapter with 2.5" Round Base - RAM-217U

Specs & Features Material: Powder Coated Marine Grade Aluminum Ball Size: 1.5" Rubber Ball Size Note: The "U" in the part number reflects product packaged in poly bag. Weight:0.6 lbs. Videos RAM DOUBLE BALL WITH 2 1/2" DIAMETER BASE & RAM® Mounts: Ball Sizes & Weight Capacities Compatible With Compatible Arms and Mounts RAM Composite Double Socket Swivel Arm for C Size 1.5" Balls - RAP-200-2U RAM Double Socket Arm with RAM® Pin-Lock™ Security Knob and Key Knob for C Size 1.5" Balls - RAM-201-SU RAM 18" Rigid Aluminum Rod Arm with 2 (qty) Single Open Sockets for 1.5" Diameter Balls - RAM-316-2U RAM Medium Length Double Socket Arm for C Size 1.5" Balls - RAM-201U RAM Long Length Double Socket Arm for C Size 1.5" Balls - RAM-201U-D RAM 1.5" Ball Medium Length Double Socket Arm with 2.5" Round Base AMPs Hole Pattern) - RAM-103U RAM 1.5" Ball Short Length Double Socket Arm with 2.5" Round Base AMPs Hole Pattern) - RAM-103U-B RAM 1.5" Ball Short Length Double Socket Arm with 75mm X 75mm VESA 3.625" Plate - RAM-103U-B-2461 RAM Mount - RAM Composite Double Socket Swivel Arm for C Size 1.5" Balls - RAP-200-12U RAM Composite Medium Length Double Socket Arm for C Size 1.5" Balls - RAP-201U