Astromania Deluxe Filter 100mm Adjustable Metal Cap for Telescope Tubes with Outer Diameter from 70mm to 92mm Aperture 75mm

A must-have to safely observe without damaging your eyes - optical filter fits snugly over your telescope's aperture to block 99.9% of incoming light.
This filter features an inside diameter of 75mm - it is designed to fit optical tubes with an outer diameter of 70mm to 92mm,the outer diameter of filter is 100mm.
The filter meets ISO 12312-2: 2015 and Amazon has verified the security. Baader Astro film in a sturdy aluminum cell.
Three clamping screws with protective plastic caps - ensure a perfect fit and are also gentle on your telescope,attaches directly - filter in anodized aluminium mounting.
NOTE: (1)Never Use Your Telescope If The Filter is Any Disrepair.(2)Because of the larger diameter, some filters may have wavy line on the film which will not have any effect for observation.