A completely seamless filter experience - never screw on a filter again. The new MagLock system features magnets that connect the filter to the threaded base, while a quarter turn secures the system in place. No vignetting up to 17 mm with one filter (16 mm with Canon/Nikon) and 19 mm with two filters stacked. The rubber frame insert provides more grip compared to aluminum filter frames. Filter frames and thread bases are made of brass. Front and rear Defender caps offer unparalleled protection during transport and storage. Available as 67mm, 72mm, 77mm, and 82mm bases for all your lenses. The Helix MagLock filter system is designed to eliminate the hassle of screwing on and off filters while providing a filter that locks securely in place after installation. Unlike other magnetic filter systems on the market, Helix offers an absolutely secure connection through our magnetic locking mechanism with a quarter turn, allowing for quick attachment and removal of filters while ensuring they stay in position even in the most demanding shooting situations. These filters aren't going anywhere until you take them off your lens. With the available 67mm, 72mm, 77mm, and 82mm brass thread bases, Helix easily covers your entire lens arsenal.