These drills were recovered from the Shrope village site in Cowley County. Both drills are made of local Florence chert from the Flint Hills. The drills get their pinkish color as a result of the chert being carefully heated before knapping to improve the it's knapping qualities. Drills were used to bore holes in materials softer than the drill material itself, such as hides, shell, or soft stone. The Shrope site, a large Great Bend aspect (ancestral Wichita) village, was excavated by Kansas Historical Society archeologists and crew in 1995. Forty-one archeological features, such as storage pits, hearths, and post molds, were uncovered at the site.