Crown's 1/4" Spindle Gouge in the Cryo treated version. Used to make coves, beads, and other details on spindle type work. Stained black ash handle is approximately 12-1/2" long, and the overall tool length is approximately 17". England About Crown Cryogenic Tools Years ago tool makers discovered the enormous benefits of cryogenically (super-cold) treated tool cutters, especially plane blades. Now this technology has been applied to select Crown Turning Tools to bring a giant leap in turning tool performance. Cryo treating cutting tools alters the crystalline molecular form of key ingredients in the metal. This altered structure helps the metal achieve a vast improvement in wear resistance for longer life and longer edge retention, and a superior feel in use.