RAM® 雙插座臂（附固定旋鈕）- B尺寸 中型

The spring retention knob makes swapping my device mount between the ball bases effortless and secure, and the double socket arm feels solid even on rough terrain.

I've been using this double socket arm with my existing 1" ball mounts, and the spring-loaded design makes adjustments quick and secure. The locking retention knob gives me confidence my device won't shift during bumpy drives.

The retention knob is a game-changer—no more worrying about the arm loosening on bumpy roads. It clicks right onto my existing 1" ball base, and the double socket design feels incredibly sturdy. Exactly what I needed to keep my tablet solidly positioned in the truck.