Genuine Leather Tooling Sheets 1.8-2.0MM Thick Genuine Top Full Grain Oil Tan Crazy Horse Cowhide Leather Sheets for Crafts Tooling Sewing Wallet Earring Hobby (Dark Brown, 8"X12"). Heat resistant, durable and supple Temper, Processed with a specialized formulation of hot stuffed fat liquors for a waxy surface feel.