For the Kahles tactical riflescopes, it's imperative for users to have as clear of a sight picture as possible in order to put rounds on target when and where they're needed. The Kahles sunshade ensures that glare won't obscure their sight picture. The sunshade fits Kahles riflescopes with 56mm objective lenses and measures 2.5 inches in overall length. Mfg: Kahles