Promaster Flex Arm HD (heavy duty)

It handled my hefty speedlight with zero sag or vibration—the locking knobs feel rock solid. Perfect for keeping a reflector in place during long portrait sessions.

I’ve been using this flex arm to hold a speedlight for product shots, and the heavy-duty build actually keeps it steady even with a softbox attached. The knobs tighten firmly without slipping, which is exactly what I needed.

The clamping mechanism feels much more secure than the standard version, and it easily held my speedlight with a softbox attached. It’s sturdy enough that I don’t worry about it tipping over during a shoot.