Samcos Camera Screw to Screw Adapter Set of 2 Barrel Nut Female Thread Converter Adapter Aluminum Alloy Photography Aid Suitable for Camera Clamps and

■Set contents: 1/4 female screw conversion adapter *2. ■Size: Approximately 16mm in diameter and 18mm in height. Material: aluminum alloy. ■With metal material, unibody design, durable and wearable. ■This is a female screw conversion adapter for connecting a magic arm that can be incorporated when you want to use cameras, monitors, LED lights, etc. in conjunction with photographic equipment. ■Friendly Tip: Both the top and bottom ends have 1/4"-20 threaded holes. Before purchasing, please make sure the knob thread on your equipment is 1/4"-20 threaded. none