EzFoto Silver Metal Screw-in Lens Hood for OLYMPUS M.ZUIKO DIGITAL 17mm F1.8, replaces LH-48B The silver screw-in curved metal lens hood fits OLYMPUS M.ZUIKO DIGITAL 17mm F1.8 Made of METAL, stylish and functional (the original OM LH_40B is made of plastic) Prevents glare and lens flare, but also provides an extra protection to your lens. The Professional Lens Hood is primarily designed to prevent unwanted stray light from entering the lens. Pls Note this is a Screw In Hood, not Bayonet Hood