Dedicated to the Nikon Fisheye NIKKOR 8-15mm f/3.5-4.5E ED lens with the HB-80 Lens Hood installed, the LC-K102 Slip-On Front Lens Cap protects the lens' front element when not in use. The slip-on design slides over the lens hood, and the cap is secured in place with a spring-loaded center pinch. This cap is a spare or replacement item for the one originally included with the lens.