Two 3/8 Screw Holes & 17mm Ball Head two 3/8 screw holes and a 17mm ball head for smooth 360 degree rotation, ideal for cameras, LED lights, microphones, and various accessories. Supports Various Devices Works with all equipment that has 3/8 inch external threads, ensuring flexible attachment preferences for different setups. Toolless Manual Includes a locking nut and 17mm ball head for easy positioning adjustments without requiring additional tools. Versatile Mounting Applications Suitable for phone holders, magnetic mounts, tablet clamps, and monitor stands, providing adaptable mounting choices. Sturdy Metal Construction Made from metal with compact dimensions (5.5cm x 2.9cm), perfect for tripods, selfie sticks, and camera mounting systems.