RAM Dual U-Bolt Base with 2.25" Ball - Fits 1.25" - 1.5" Diameter Rails / Posts

RAM-D-247U-4-IN1 RAM Steel Reinforced Square Clamp Base for Po...

RAM-D-235-1U RAM Double U-Bolt Ball Base for 1.25" - 1.5" ...

RAM MOUNT RAM-101U-235-1 W/ 1.5" BALL & U-Bolt Mount for 1.25 - 1.5" Pipe

RAM-D-247U-25 Square Post Clamp Base w/ 2.25" inch Ram D-size Ball

RAM-D-247U-3 RAM Mounts Square Post Clamp Base for Posts up to 3" Wide - D Size

RAM-D-271U-2 RAM Mounts Rail Clamp Ball Base for 2" - 2.5" Rails - D Size