Pottery Supplies › Kemper S4 Metal Scraper Rib Image 1 of 1 Kemper S4 Metal Scraper Rib $4.00 Only 1 available Used for shaping, smoothing and trimming pottery shapes and slabs, this scraper is made of thin, flexible spring steel. Add To Cart Added! Used for shaping, smoothing and trimming pottery shapes and slabs, this scraper is made of thin, flexible spring steel. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like Mudshark $11.00 Sold Out The Small Bowl Rib $13.00 Sold Out Shape 2 Polymer Rib $9.00 Sold Out Do-All Trim Tool $25.00 Sold Out E-Gift Card from $25.00