ITEM NAME:Black Square Lens Hood Shade ABS Slide-in Sunshade for Cokin P Series Color Description: This hood is suitable for Cokin P series filter holder. It simply fits into the filter-holder by pressing on the upper and lower parts of the lens hood. Stackable design allows for the attachment of several of these hoods to one another, depending on the focal length of your lens, to allow for greater protection. Lens hoods are primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the camera lens. The end of the lens is extended, you also get the added of some extra protection from accidental impact. Specification: Color: Black Size: 100*95mm Fit for all Cokin P Series Filter Holder Package Includes: 1 Piece Square Lens Hood SKU: ALU0023440677001237.This hood is suitable for Cokin P series filter holder. Fit for all Cokin P Series Filter Holder. It simply fits into the filter-holder by pressing on the upper and lower parts of the lens hood. 1 Piece Square Lens Hood.