The filter thread size of Panasonic Lumix G Vario 14-42mm F3.5-5.6 II ASPH Mega OIS is 46mm.
Below are links to the filters that we recommend you to consider for your Panasonic 14-42mm F3.5-5.6 II OIS:
Read our detailed Panasonic Lumix G Vario 14-42mm F3.5-5.6 II ASPH Mega OIS Review