RAM® 雙球頭支架（無旋鈕）- 橡果螺母 - B尺寸中型

Tight spaces are the worst with bulky knobs, so the acorn nut on this arm is exactly what I needed for my setup. It's a medium length, which fits perfectly, and the lack of a hand knob means nothing snags or gets in the way.

The acorn nut design is a lifesaver in my tight setup where a regular knob would've been constantly in the way. It's still plenty easy to adjust with a wrench, and the medium length fits my needs perfectly without adding extra bulk.

This arm is rock solid with no wobble, and the acorn nut lets me mount it flush in a cramped space where a knob would hit the dash.