RAM® Stack-N-Stow Ball Adapter - C Size The RAP-395T-BCU consists of a 1.5" ball, connected to a round base, that contains female grooves and hardware that will allow mounting to all RAM STACK-N-STOW™ Bait Boards. Specifications: * Ball Size: C Size (1.5") * Weight Capacity: Standard Use: 4 lbs, Heavy-Duty Use: 3 lbs * Materials: High Strength Composite * Packaging Type: Poly Bag * Weight: 0.15 lbs Hardware Included:  * (1) #10-24 x 2" Machine Screw * (1) #10-24 Nylock Nut