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This ledge is most well-known Kansas limestone. Cut & Finish. Standard Cuts. We stock a variety of standard sizes and will custom cut to meet your needs. Stone Slabs. We are able to custom produce large slabs up to 8 x 20 feet. Flint Hills Blend. Our spin on the landscape x 8 retaining wall block. A unique combination of 3″, 6″, 9 ...