This 77mm Thread Plate for Helix Magnetic Filters from PolarPro is a magnetic adapter ring that mounts directly onto the filter threads of a lens. Once mounted, it is compatible with all of the filters in the Helix magnetic filter system. Providing a secure attachment with a magnetic connection plus a quarter-turn locking mechanism, the Helix system makes installing and removing filters lightning fast.

Made of durable brass, PolarPro thread plates are compatible with the included Helix Defender Plate, providing complete lens protection.