Neewer 3x Bayonet Mount Ring for Nikon 18-15 18-105 55-200mm Lens A replacement bayonet mount ring Used to replace your broken, damaged, cracked and unusable bayonet mount ring Good quality and easy to install The bayonet mount design makes it firmly on the lens Compatible with Nikon G 18-55 / 18-105 / 55-200. suitable for nikon only