【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 3/8" Male to 1/4" Female Thread Converters: These can be used for reconfiguring camera and video camera shooting equipment and accessories, or for connecting to and utilizing microphone stands. The thread conversion adapter (1/4" Female ⇔ 3/8" Male) can be used in situations where you need to convert between the 3/8 inch size thread, which is common in Europe, and the 1/4 inch size. It can be easily attached and detached using a flathead screwdriver, coin, or similar tool. Compatible with: ball heads, fluid heads, base mounts, shooting tripods, monopods, shooting grips, LED lights, speedlights/flashes, brackets, shutters, mounts, bracket extension plates, adapters, handheld 3-axis gimbals/stabilizers, spigot adapters (dovetail screws), clamp holders, shooting stands, etc. With high versatility, it can be converted to 1/4 inch for use in many genres, greatly expanding installation and mounting freedom. You can also utilize your existing 1/4 inch threaded items for studio and audio equipment setup. Since the inner diameter is a general-purpose 1/4" female threaded screw, it can convert 3/8" threaded equipment to be compatible with 1/4"-20 threads, allowing connection with most general-purpose accessories. It has a thread at the tip and can be easily attached and detached with a flathead screwdriver, making installation and removal easy. Recommended for those who frequently reconfigure shooting equipment and audio equipment, such as for heads, ball heads, rigs, gauges, top handles, light stands, strobe accessories, and spigot adapters. It can be conveniently used by a wide range of users, both professional and amateur.