The Fotodiox designed lens cap is specifically made for all Nikon, Nikkor lenses, (F, non-AI, AI, AIS, AF, AFD, AFS, G, DX, FX Lenses), fully compatible with LF-1 Cap . This easy to attach rear lens cap gives sturdy protection for the rear contacts of Nikon/Nikkor lenses when not in use. It fits tight and securely on the lens by a simple twist. The cap is made of high quality ABS material, which will last for long time.