Ade Advanced Optics Sunshade for Sightmark 10-40X, 6-25X and Weaver Super Slam 3-9X Rifle Scope, 56mm, Black Eliminates glare in bright conditions Keeps dust and rain off of objective lens Made by Ade Advanced Optics for Sightmark 56mm rifle scope Made by Ade Advanced Optics for Weaver Super Slam 56mm rifle scope Made by Ade Advanced Optics for Millett Buck gold, LRS, TRS 56mm rifle scope Aircraft T6061 aluminum with anodized finish; 105.5 mm in length