TCMT 3 Racks CNC Wakeboard Tower Rack Bat Back Boat Surfboard / Kneeboard Holder Silver - Walmart.com
Amazon.com : Amarine Made Heavy Duty Single Kneeboard and Single Wakeboard Combo Tower Rack for Clamped Tube Size: 2",2-1/4", 2-1/2" : Sports & Outdoors
Amazon.com : Krypt Towers Reborn Pro Wakeboard Tower Racks for Boat, 6061 Aluminum Tines, Wake Board, Kneeboard, Ski, Clamp Sizes 1 3/4, 1 7/8, 2, 2 1/4, 2 3/8, 2 1/2, Polished or Black (Kneeboard Black) : Sports & Outdoors