Nikon Front & Rear Lens Cap. Nikon D40 / D60. Nikon D3000, D3100, D3200, D3300, D3400, D3500 i.e D3XXX series. Nikon D5000, D5100, D5200, D5300, D5500 D5600i.e D5XXX series. There is fungus in the optics.
eBay