Rainbowimaging HO55B Lens Hood for Olympus Zuiko ED 9-18mm f/4.0 -5.6 Lens (Black) Designed for Olympus M.Zuiko Digital ED 9-18mm f/4.0 -5.6 Lens & M.ZUIKO DIGITAL ED 12-50mm F3.5-6.3 EZ Lens 100% replaces OLYMPUS Lens Hood LH-55B Prevent unwanted stray light from entering the lens. Ensures no problems with vignetting or motor functions. Added benefit of extra protection from accidental impact. Designed for Olympus M.Zuiko Digital ED 9-18mm f/4.0 -5.6 Lens & M.ZUIKO DIGITAL ED 12-50mm F3.5-6.3 EZ Lens 100% replaces OLYMPUS Lens Hood LH-55B Prevent unwanted stray light from entering the lens. Ensures no problems with vignetting or motor functions. Added benefit of extra protection from accidental impact.