Product features and benefits: complete set with 10 sizes: the right size for any job, every time; chrome vanadium construction: made from the highest quality alloys for long-term durability. Product specifications: sizes: 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1”; type: Long.