【Specifications】Outer (Male Thread): 3/8 inch; Inner (Female Thread): 1/4 inch 【Material】Aluminum Alloy 【Weight】Approx. 2g / piece New, Unused ------------------------------------------------------------------- ※ Set of 4 conversion screws: 3/8" male to 1/4" female: These can be used for rearranging camera and video camera shooting equipment and accessories, connecting to microphone stands, and other applications. The screw adapter (1/4" female ⇔ 3/8" male) can be used when converting between the 3/8 inch screw size, which is the mainstream size in Europe, and the 1/4 inch size. Removal and attachment can be easily done using a flathead screwdriver, coin, etc. Compatible with ball heads, free-angle ball heads, base mounts, photographic tripods, monopods, shooting grips, LED lights, speedlights, flash brackets, shutter mounts, bracket extension plates, adapters, handheld three-axis gimbals, stabilizers, spigot adapters (dovetail screws), clamp holders, shooting stands, etc. Highly versatile, it can be converted to 1/4 inch, greatly expanding the freedom of installation and attachment. You can also utilize your 1/4 inch threaded items for studio and audio equipment setup. Since the inner diameter is a general-purpose 1/4" female thread screw, it can convert 3/8" screw specification equipment to 1/4"-20 thread compatible, allowing connection of most general-purpose accessories. It has a thread at the tip and is easy to attach and detach with a ⊖ screwdriver, making it easy to install and remove. Recommended for those who frequently rearrange shooting equipment and audio equipment, such as ball heads, rigs, gauges, top handles, light stands, strobe accessories, and spigot adapters. Widely and conveniently used by both professionals and amateurs.