قاعدة RAM® لكرة عمود الدراجة النارية مع سدادة تمدد مطاطية

I was worried the rubber expansion plug wouldn't hold tight in my bike's stem, but it's rock-solid after installation. The 1" rubber ball gives a clean, professional look for mounting my phone right in the center.

First off, my phone mount fits perfectly without any wiggle, and that rubber expansion plug held tight even through some rough backroads this morning.

The rubber expansion plug grips the fork stem tight with zero wobble, even after a few hundred miles of bumpy roads. That 1" ball locks my phone mount securely and sits dead center, which makes navigation easy to glance at while riding.