This product will let you attach the RAM Mounts system to any round, square, or odd-shaped rail or bar that is between 0.625" and 1.5" (1.59cm and 3.81cm) in diameter. Clamps on tight and has a 1" ball for connecting to many of the RAM Mounts sockets.

For larger tubes you may want the RAP-B-404U or the RAP-B-401U.

• Clamping Range: 0.625" - 1.5" (1.59cm to 3.81cm)
• Physical Dimensions:
  Height: 4.25" (10.80cm)
  Width: 1.18" (3cm)
• High strength glass filled nylon construction with corrosion resistant stainless steel hardware
• Rubber pads provide stable, even gripping and protection of mounting surface
• Clamp jaw is configured for round, flat and odd shapes
• Quick installation and removal of Tough-Claw™ 
• Lifetime Warranty!
• Made in U.S.A.
• Material: High Strength Composite and Stainless Steel Hardware
• Ball Size: 1" Rubber Ball "B" Size

Note: The "U" in the part number reflects product packaged in poly bag.