Sizes: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16" & 3/4". This is a set of combination spanners so one with an open-ended profile and the other with a ring profile. Made from chromium-vanadium steel for strength and durability and helps resist abrasion, oxidation, and corrosion. Stubby design is ideal for small spaces. Mirror polished finish for smoothness of the spanner when using. Supplied in a tool roll for easy storage and transportation.