Soft Rubber Brayer 4inch. A brayer is a small hand roller that was traditionally used in printmaking. It is also a popular rubber stamping tool and can be used to ink stamps as well as to produce decorative results. Brayers are used to apply a thin layer of ink or paint to a surface. The brayer roller is made from rubber. Apply ink or paint to the brayer and rolling over a single area will give a dense build-up of color while blended or shaded effects can be achieved by overlapping colors of ink or paint.