This is a spare or replacement Lens Cap for Nikon Lenses with a 72mm filter thread.
Kase 52-72mm Magnetic Circular Step Up Ring
Urth 72mm Plus+ ND8-128 (3-7 Stop) Variable ND Lens Filter
USED Hoya 72mm Pro1 Digital Protector Filter
Sony 72mm T* Circular Polariser Filter
Urth 72mm Plus+ Ethereal 1/4 Diffusion Lens Filter
Urth 72mm Plus+ Magnetic UV Lens Filter
