M54a Change Ring with S54a ring dovetail

The quick changing ring made of high-quality steel has an M54 external thread on one side and a 50 mm dovetail on the other. The optical length is 4mm. Together with the M54i Heavy-Duty Quick Changer with S54i Dovetail receptor (#2958760 , € 105,- ) it fits between any M54 thread and allows for the exchange or easy alignment of accessories. Quick Changer and Quick Changing Ring are also available together as M54 Heavy-Duty Quick Change System – Changer and change ring (#2958766 , € 152,- ) .