RAM® Ball Base with 5/16"-18 Post - C Size - RAM-239U

The RAM-239 is a 1.5" diameter C-size ball with an exteneded post and a 5/16"-16 male threaded post. Information BALL SIZE: C Size (1.5") WEIGHT CAPACITY: Standard Use: 4 lbs Heavy-Duty Use: 3 lbs MATERIALS: Marine-grade aluminum PACKAGING TYPE: Poly Bag WEIGHT: 0.17 lb Additional Hardware C Size Double Socket Arms   RAM® Double Socket Arm - C Size Medium - RAM-201U   RAM® Double Socket Arm - C Size Long - RAM-201U-D   RAM® Double Socket Arm - C Size Short - RAM-201U-B