MAXIMUM DURABILITY - Constructed with robust materials, the Profoto OCF Speedring ensures long-lasting performance, withstanding frequent use in demanding shooting environments. SEAMLESS COMPATIBILITY - Designed specifically for Profoto B1, B2, B1X, and B10 series, this speedring guarantees a perfect fit and optimal functionality with your existing equipment. ULTIMATE EASE OF USE - Quickly and effortlessly mount your off-camera flash softbox with the intuitive design of the Profoto OCF Speedring, saving valuable time during setup and adjustments. PROVIDES A SECURE FIT - The Profoto OCF Speedring ensures a stable and wobble-free connection between your Profoto off-camera flash and softbox, enhancing the reliability of your setup.