RAM-271U-2 RAM Rail Clamp Ball Base for 2" - 2.5" Rails w/ C Size 1.5 Inch Ball

RAM Mount 2.25" D-Ball Clamp Rail Base 1.25" to 1.88" in Diameter RAM-D-271U-12

RAM-D-235U; Double U-Bolt Ball Base for 1"-1.25" Rails with D Size 2.25" ball

RAM-D-247U-25 RAM Square Post Clamp Base for Posts up to 2.5" Wide - D Size 2.25

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

RAM Mount Square 1.5 inch Width Rail Clamp Base with 2.25" D-Ball RAM-D-247U-15

RAM Mount Square 3 inch Width Rail Clamp Base with 2.25" D-Ball RAM-D-247U-3

RAM Dual U-Bolt Base with 2.25" Ball - Fits 1" - 1.25" Diameter Rails / Posts