1 Year Warranty Included Sizes: 1/8, 3/16, 1/4. 5/16, 3/8, 7/16, 1/2, 9/16, 5/8 and 11/16 Whitworth Made from chromium-vanadium steel for strength and durability and helps resist abrasion, oxidation, and corrosion Mirror polished finish This is a set of combination spanners so one with an open-ended profile and the other with a ring profile Supplied in a tool roll for easy storage and transportation