ENHANCED DURABILITY - Constructed with robust materials, this Glow speedring insert ensures long-lasting performance and withstands frequent use in demanding photography environments. SEAMLESS COMPATIBILITY - Specifically designed for Flashpoint XPLOR 400/300, this 139mm speedring insert guarantees a perfect fit and optimal functionality with your existing equipment. ULTRA-LIGHTWEIGHT DESIGN - The low-profile build of this Glow speedring insert adds minimal weight to your setup, making it ideal for on-location shoots and easy transport. SIMPLE AND EASY SETUP - Quickly attach and detach your light modifiers with the user-friendly design, saving valuable time during photoshoots and allowing for swift adjustments.