The product is a new lens mount bayonet designed specifically for the Fujinon XF 16-55mm F2.8 R LM WR lens. It is a replacement part compatible with Fuji cameras, suitable for digital SLR cameras in the Fujifilm XF series. Made in China, this unit includes one piece and is a crucial component for ensuring a secure and precise fit between the lens and camera body. It provides a reliable solution for repairing or upgrading the lens mount of your Fujinon XF 16-55mm F2.8 R LM WR lens.