Single Socket Swivel Arm For 20mm Ball Head Adapter With One Quarter Twenty Threaded Screw Compatible With GoPro And Action Cameras Ball Joint For Easy Angle Adjustment Butterfly Knob Lock Four Centimeter Mounting Arm

Single-Unit 20mm Ball Arm Swivel Plate for GoPro
✔️ 20mm ball arm with 1/4 inch screw; 6061-T6 aluminum, easy tighten

This compact swivel plate accepts a 20mm ball head adapter and a 1/4-inch screw, ideal for GoPro and action cameras in on-the-go rigs, desk setups, or handheld vlogging rigs.

✅ 4 cm (40 mm) long single arm with butterfly knob for tool-free tightening
✅ 20 mm ball joint compatibility with 0.787 in adapters (iBOLT/Bulletpoint)
✅ 6061-T6 aluminum body with hard anodized coating for durability
✅ 1/4"-20 threaded mount fits most action cameras and accessories
✅ Lifetime warranty for peace of mind in harsh environments

💡 What is a 20 mm ball arm used for in camera mounting setups?

A handy guide to its role in flexibly positioning cameras. 1) It links camera to a 20 mm ball adapter for multiple angles 2) It enables quick angle changes with the butterfly knob 3) It uses a standard 1/4"-20 thread compatible with GoPro mounts 4) It’s built from rugged aluminum to withstand outdoor shoots