Boning sheaths are suitable for straight knives such as boning, Y-cut and fillet types. Skinning sheaths are suitable for curved skinning knives. All are made from heavy duty tanned leather, stitched and riveted. The quality sheaths are Taurus brand, with the skinning sheath featuring a dome-down cover. All versions have a steel pocket. Sheath lengths are: (1) 22cm, (2) 24cm, (3) 20cm, (4) 30cm.