The filter thread size of Nikon 1 Nikkor VR 10-100mm f4.5-5.6 PD-Zoom is 72mm.
Below are links to the filters that we recommend you to consider for your Nikon 1 VR 10-100mm f4.5-5.6 PD-Zoom:
Read our detailed Nikon 1 Nikkor VR 10-100mm f4.5-5.6 PD-Zoom Review