William Optics' model 6 and 6A flatteners have a non-standard male thread on the telescope side. This adapter # AD4-A015 allows you to couple these flatteners to a male SCT thread (2" x 24 tpi). With this, you can use the 6/6A with William Optics' Z66 and Z70 refractors, as well as with most SCT telescopes that have this thread.
- Item weight = 0.7oz
- Length = 0.76" / 19.4mm
- Outside diameter = 2.13" / 54.2mm