Features:
Standard 1.25'' diameter: Fit for 1.25'' eyepiece and telescope focuser
Designed for: Work with Refractor and catadioptric telescopes, not for reflector telescope
Wide 90 degree angle: You can view correct image from refractor telescope stand and just look down with a comfortable angle.
Super easy to use: Just insert into 1.25'' telescope at the silver end, the other end fix 1.25'' eyepiece by the screw.
Body material: Metal, plastic, glass, provide clear and sharp image.
With dust cover: Always keep your lens clear, prolong life.

Specifications:
Lens material: Glass
Diagonal sleeve material: Plastic
Interface material: Metal
Size: 1.25 inches (about 31.7mm)
Imaging direction: Reverse image
Color: Black
Net weight: 77g
Gross weight: 99g

Package include:
1 x 90 Degree Diagonal Mirror
2 x Dust Cover