H&Y Filters Swift Magnetic 100mm Filter Holder for RevoRing Swift Bridge Rings (B) These are not flaws

These are not flaws

Measureing grades display the remaining quantity of chemistry in 100 ml increments

It also comes included with the Hadley Original / Pro / 2020 Pro insert

Exposure Reduction: Not Specified by Manufacturer

H&Y Filters Swift Magnetic 100mm Filter Holder for RevoRing Swift Bridge Rings (B) These are not flawsH&Y Filters Swift Magnetic 100mm Filter Holder for RevoRing Key Features Holds Three 100mm Wide Filters Tough, Lightweight Aluminum Construction Secure Locking Knob Clear Scale Lines for Precise Control The Swift Magnetic Filter Holder from H&Y Filters is a "C" Swift System module. It requires an "A" base module like the Swift Magnetic Variable Adapter or the Magnetic screw in adapter for wide angle lens, plus a "B" module like the Swift Bridge Ring.