it is third party lens hood
Handy reversible design allows you to attach the hood in reverse for easy storage in your bag.
compatible with nikon 18-140mm f/3.5-5.6g ed vr, 18-135mm f/3.5-5.6g if-ed, 18-105mm f/3.5-5.6g ed vr, 18-70mm f/3.5-4.5g if-ed nikkor dx lenses.
a perfect nikon hb-32 replacement.
lens hood fits both sides