Pottery Tools › Fat Kidney Rib Pottery Tool Image 1 of 5 Image 2 of 5 Image 3 of 5 Image 4 of 5 Image 5 of 5 Fat Kidney Rib Pottery Tool $20.00 sold out About 3-1/4” by 2-1/4”Photo is representational of the rib you will receive. Sold Out Added! About 3-1/4” by 2-1/4”Photo is representational of the rib you will receive.