New William Optics 1.25"SCT Rotolock eyepiece adapter/visual back (with SCT thread).

This WO adapter has an SCT thread on one side, and a standard 1.25" Rotolock visual back on the other side.

Just rotate the adapter ring clockwise to lock any inserted accessory, or counter-clockwise to release the accessory. Innovative design ensures that you get a very solid hold and the accessory is perfectly centered every time. No thumbscrews to worry about! The internal ball bearings and detents make this adapter a joy to use. 

Schmidt-Cassegrain Telescopes 

Owners of all popular SCTs will find WO 1.25" SCT Rotolock Directly mounts to the SCT male threads on all popular 5",9.25",11" and 14" SCTs (Celestron & Meade).

Light-In Side        SCT  (M50.8 female)

Light-Out Side     1.25" Push-in (female)

Optical Length     50.7 mm