Hoya Instant Action Adapter Ring 77mm

Hoya Instant Action Adapter Ring and Hoya Instant Action Conversion Ring (sold separately) allow you to instantly attach and detach common screw type filters onto your lens with the help of magnet power.How to use Screw Hoya Instant Action Adapter Ring onto the lens Screw Hoya Instant Action Conversion Ring (sold separately) to your screw type filter Attach filter to the lens NB! Hoya Instant Action Conversion Ring is sold separately.