【Seamless 360° Rotation】 Tightly encircling the lens, this ring makes zero drifting and distributes even pressure for precise focus that helps take smooth and cinematic zoom shots 【Standard 0.8 Mod Gears】 0.8 Mod gears suit follow focuses of different focus gear widths, 【Effortless Installation】 Shaped like a rubber band, this focus gear ring can attach to the lens in a second and requires no tools,