Upgrade your Kowa Spotting Scope with the TW-11WZ II 30-70x Zoom Eyepiece. It can increase your field of view by 20% when compared to the standard eyepiece, and can be installed/removed easily thanks to the simple twist lock and quick-release mechanism. The TW-11WZ II 30-70x Eyepiece utilizes 2 XD lenses, delivering an image that’s virtually free from chromatic aberration with stunning contrast and edge to edge sharpness. This eyepiece also has a constant eye relief throughout the entire zoom range, and is digiscope compatible. Compatible Kowa Spotting Scopes: TSN -771TSN-772TSN-773TSN-774TSN-881TSN-882TSN-883TSN-884TSN-99ATSN-99S Kowa TW-11WZ II 30-70x Zoom Spotting Scope Eyepiece TE-11WZ-II