Package Dimensions: 10.921 cms (L) x 10.668 cms (W) x 2.286 cms (H) Product Type: Camera Lenses Package Quantity: 1 Country Of Origin: Taiwan The Canon EW-83M Lens Hood for EF 24-105mm f/3.5-5.6 IS STM is designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. In addition, since the end of the lens is extended, you also get the added benefit of extra protection from accidental impact.