Craftsman Evolv 13 Piece Quick Fit Nut Driver Set with Case, 9-14064 12 driver blades Comes with case 5, 6, 8, 10, 11 and 12 mm 3/16, 1/4, 5/16, 3/8, 7/16 and 1/2-in. Backed by Craftsman's Lifetime Guarantee