MQODLFP Astronomical Telescope Composite Film Filter Solar Film for Watching Sunspot Filter TelescopeAccessories A

All metal, no glue needed, no formaldehyde, environmentally friendly, no need to stick. Applications: Supports all types of telescopes, reflectors, refractors to observe star clusters, the Moon, planets and other celestial bodies. The metal ring thread is screwed on directly. No glue is It never come off. It can adjust the eyepiece position; helping you get a clearer image. It 't fall off or debond over time. No black glued pressing ring.