Super High Precision Copper T-Ring for Nikon Full Frame Cameras

This William Optics copper T-ring provides a premium interface for connecting Nikon full-frame cameras to M48-threaded telescopes and flatteners. CNC-machined from high-quality copper with a hard outer coating, it delivers superior precision compared to aluminum alternatives, eliminating wobble and gaps for rock-solid camera attachment. With 48mm x 0.75 female threads and an optical path length of 8.5mm, it achieves the standard 55mm back focus requirement for William Optics corrective optics including the WOStar 71, RedCat 51, and all compatible flatteners.