Do you own a Takahashi FS-102, FS-128, FS-152, FSQ-106, or the TOA-130N and 130F series telescope? Then you need the Takahashi 2" Compression Ring Adapter.
The Takahashi 2" Ring Adapter attaches to the rear of the telescope optical tube assembly. This non-marring compression ring eyepiece holder for 2" eyepieces allows the use of 2" star diagonals, eyepieces, and photo accessories on those Takahashi 4" to 6" refractors that use a 2.7" focuser draw tube.
A knurled grip ring on the Takahashi 2" Compression Ring Adapter makes it a breeze to install and the external set screw tightens down to spread the internal split brass compression ring to securely hold your 2" accessories safely in place.
Takahashi Product Number: TOA0400