Hollister New Image Convex Ceraplus Skin Barrier, Pre-Cut Stoma Opening 1-1/8″ (29 MM) Flange 2-1/4″ (57 MM)-Box Of 5 is an ostomy skin barrier designed to help create a secure seal and support confident wear with two-piece, convex barrier profile, ceraplus wear formulation, and pre-cut opening. Box of 5.