This Seamless Focus Gear 7-Ring Set from SmallRig equips your 62.5 to 83mm cine lenses with a standard 0.8 MOD gearing for integration with follow focus systems. Included in the set are four rings ranging in size from 62.5 to 83mm. They attach to your lens of choice easily thanks to their rubber construction for tool-less installation. The rings attach firmly to provide precise 360° rotation compatible with follow focus systems like the SmallRig mini and F60. Fourteen A/B hard stops are included with the kit, which hook onto the rings and facilitate automatic lens calibration.