Features and Benefits * Flat, thin head design allows access to tight wrenching locations * Open end wrenches with 15 and 80 degree offsets * Bold stamped markings for easy identification * Heat treated Chrome Moly steel for durability and long life * Made in the U.S.A. with a lifetime warranty This 11 piece wrench set includes sizes: 7/32", 15/64", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", and 5/8". The wrench thickness ranges from .105" on the small sizes to .210 thick on the largest sizes.