Long and lean, the Small Platter Rib is designed to give good compression when you are making plates and platters enabling you to properly compress the clay and avoid those cracks that sometimes develop. They are made with a stiff polymer but still offer some flexibility. The Small Platter Rib is particularly good for making shallow pasta-style bowls. 7.5" x 1.69" (19 cm x 4.3 cm). Unlike rubber ribs Mudtools polymer ribs will not develop burrs. In fact the more you use them the nicer they become and they burnish themselves as you use them.