RAM® Aqua Box® 煞車/離合器油壺支架（適用大型裝置）

The fit on my bike's reservoir rails was a breeze thanks to the 0.5" to 1.25" range, and the double socket arm stays put even on rough trails. Phone's been rock solid through a few hundred miles now, no wobble at all.

The double socket arm gives me just enough adjustability to get my phone perfectly angled on the handlebar, and the base clamps down securely on the reservoir. Took a few minutes to dial it in, but once it's set, it hasn't budged on rough roads.

This thing locks onto my bike's reservoir with zero wobble, and the double socket arm lets me angle my phone exactly where I need it. Survived some rough gravel roads without budging, which is more than I can say for my last mount.