Features: 1/4 to 3/8 threaded extension rod gooseneck arm is a versatiled accessory for connecting DSLR cameras, shoulder mounts, camera cages, light stands, mic stands, and tripods, ensuring secure and stable equipment setups. From durability metal, this adapter offering 3 length options—20cm, 30cm, and 50cm—to accommodate various needs Featuring a flexible designing that allows for adjustable viewing and wide compatibility with any 1/4inch screws. For photographers, videographers, and content creators who require reliabled and adjustment mounting solution for their digital cameras, DSLRs, securitycameras, and lighting equipment. Perfectly for use in photography studios, live streaming setups, outdoor, or any scenario where stable and adjustable camera or lighting support, enhancing the overall experience. Specifications: Item：Metal Hose for Phone Bracket Fitting Length：about 20cm/7.87in 30cm/11.8in 50cm/19.7in Component：Metal Connection：1/4 Male to 3/8 Female Screws Package Includes: 1PC 1/4 to 3/8 Screws Metal Hose note: Due to the problem of lighting effect, there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurement.