M54 x 0.75 Inverter Ring (changes M54 female thread to M54 male)

Description Inverter ring with continuous M54 x 0,75 male thread Converts an M54 x 0.75 female thread into an M54 x 0.75 male thread Optical length equals to zero, disappears completely between two M54 x 0.75 internal threads and therefore cannot become jammed. As soon as the connection is opened, the external thread ring is also loose Inside non-reflecting grooved and painted dead flat black Specifications MANUFACTURER Baader Planetarium SKU (#) 2458061 WEIGHT (KG) 0.005 USAGE changes an M54 inner thread into an M54 outer thread INNER DIAMETER / CLEAR APERTURE (MM) 51 OUTER DIAMETER 54 OUTER CONNECTION (LENS SIDED) Thread, M54 x 0,75 OUTER CONNECTION (EYEPIECE/-CAMERA-SIDED) Thread, M54 x 0,75 COMPATIBLE BRANDS Baader Planetarium, Skywatcher, TS-Optics TYPE OF ADAPTER Switcher ring