Schlep your log or sup surf shred stick on your bike! Easy to install and bars pop off with the press of a pin. SUP/Long Board model will hold boards up to 28lbs, 10' long, 30" wide and 3.75" thick. 'Adjust' the bend the tubes a little and a 4.5" thick board will fit just fine. Hardware Included to Fit Wide Range of Head Tube Sizes and Frame Configurations. Rear Rack Designed to Mount Either to the Rear Seat Post or Rear Bike Rack. Rack made of Anodized Aluminum Tubes with Stainless Steel Hardware. Foam Padding on the Tubes Prevents Damage to Your Board.