RAM C Size 1.5" Ball Connected to a 1/4-20 Female Thread Hex Hole - RAM-337U

The RAM-337U includes a 1/4"-20 female thread hex hole connected to a 1.5" rubber ball. 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:0.14 lbs.   Compatible With Compatible Arms and Mounts 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 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 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 S