RAM® Tough-Claw™ 中型夾具底座（附雙插座臂）

I've been using this clamp on a square tube railing for two weeks now, and the double socket arm lets me position my device exactly where I need it without any slipping. The tool-less installation really is as quick as they claim.

Clamped it onto the square tubing of my truck rack in seconds without any tools, and the double socket arm holds my tablet perfectly steady even on bumpy roads.

Installed this on my boat’s T-top rail and the clamp held firm even through some choppy water. The double socket arm lets me position my phone exactly where I need it without slipping.