2" Eyepiece Barrel to Schmidt Thread Adapter
Fits in place of a 2" eyepiece, but has male Schmidt threads like
a SCT visual back. Adapts SCT visual back devices to 2" backs,
focusers, refracters, etc. Male Schmidt threads fit SCT focal
reducers, diagonals, turrets, etc. Threaded for 2" filters. No
"safety recess" to interfere with compression rings. Black
Price includes shipping in the USA!