New William Optics 2” Rotolock eyepiece adapter/visual back diagonal upgrade.  

Upgrade your WO diagonal into WO 2” RotoLock model!!!

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.

This RotoLock diagonal upgrade can be used with most William Optics 2” diagonals.