RAM® 方柱夾緊底座（適用寬度達2.5吋的柱子）- D尺寸

This clamp base fits perfectly on my 2.25-inch square post, and the ball mount makes adjusting my device effortless. The build quality feels solid enough to handle heavy gear without any wobble.

The clamp’s D-size ball locked tightly into my existing RAM arm without any wobble, and the square post base fits my 2-inch trailer frame perfectly. Installation took just a few minutes with the included hardware, and it feels solid enough for rough terrain.

I needed a strong hold for my marine radio mount, and this clamp’s rubber-coated grip on the square rail hasn’t budged even in rough water.