The filter thread size of Panasonic Leica DG Vario-Elmarit 12-60mm F2.8-4.0 ASPH Power OIS is 62mm.
Below are links to the filters that we recommend you to consider for your Panasonic 12-60mm F2.8-4.0:
Read our detailed Panasonic Leica DG Vario-Elmarit 12-60mm F2.8-4.0 ASPH Power OIS Review