SUPERIOR CLARITY - Features premium AstroSolar Safety Film, ensuring sharp, high-resolution views of the sun without compromising image quality for detailed observation. MAXIMUM SAFETY - Designed with an optical density of 5, this filter blocks 99.999% of intense sunlight, protecting your eyes during visual solar observation and imaging. VERSATILE FIT - Equipped with adjustable centering bolts, the filter accommodates outer clamping ranges from 75-90mm and inner clamping ranges from 101-116mm for secure attachment. EASY INSTALLATION - Comes with three 13x24mm centering bolts and safety straps with glue pads, making setup straightforward and ensuring the filter stays firmly in place.