These scrapers were recovered during the 1994 Kansas Archeology Training Program field school at the Killdeer site, since destroyed by construction. Scrapers would have likely been hafted on a handle and used to scrape hides. The tools would have required periodic resharpening. They are made of Florence chert from the Flint Hills region and two get their pinkish color as a result of the material being carefully heated before manufacturing to improve the chert's knapping qualities. The Killdeer site was a Lower Walnut focus Great Bend aspect (ancestral Wichita) site in Cowley County with numerous pits, basins and post molds.