Large Bowl Polymer Rib YellowLarge Bowl Polymer Rib Yellow Large Bowl Rib is the big brother of the Small Bowl Rib. It is designed to give as many radius sweeps on the clay as possible. With a smaller curve in the front and bigger curve in the back, this is a workhorse of a rib. Especially if you are throwing big pots! All of our polymer ribs are made of unique flexible materials that are resistant to cracking and the formation of burrs. We've found that with general use these