1.25in Lightwave Premium Dielectric Diagonal RED A premium dielectric coated diagonal which is small and compact with very high quality machining and a super-hard black anodised chassis and red anodised sides. Delivers all the optical and mechanical quality you'd expect from a premium diagonal. New improved silver side version with anti-slip barrel and easy grip thumbscrew. Perfect for small airline portable refractors. Non-metallic coatings with 99% reflectvity. Scratch resistant dielectric mirror coating enabling more frequent cleaning than aluminium coated diagonals. Threaded for use with standard 1.25" eyepiece filters. Blackened interior for high contrast (especially recommended for the moon, sun and planets!). Non-marring brass compression ring Includes dust caps both ends, and a foam filled box.