Square Post Clamp Base 5 Inch Max Width with 2.25 Inch Ball
Price: $108.99
Square Post Clamp Base with 2.25 Inch Ball Fits Posts 1.75" - 4" Wide
Price: $61.00
Square Post Clamp Ratchet Base 4 Inch Max Width with 1 Inch NPT Post
Price: $168.49