Material: Made of high-quality aluminum alloy, exquisite workmanship, rust prevention, corrosion resistance, solid structure, stability, not easy to damage, long service life. Size: Your thread: M4 male to 1/4 male; Overall dimensions: 16mm x 18mm/0.63 inch x 0.71 inch (depth * height) Design: The surface has groove design, anti-slip knurled surface, no burr, easy to install stably, giving you a good use experience. Clear internal thread, convenient use and stable connection. The package includes: You will receive 4 pieces of microphone bracket adapters, with sufficient quantity and quality of materials to meet your various needs. Widely used: The microphone bracket adapter is mainly used for the fixed installation of the microphone bracket, and is suitable for most types of microphone brackets, camera brackets and tape recorder brackets.