PRATT-READ Nut Driver Set, Specifications: SAE Measurement, Solid Shaft, Cellulose Acetate Handle Material, Ergonomic Handle, 6 Flutes, 7 Piece, Includes: 3/16 x 3, 1/4 x 3-1/4, 5/16 x 3-1/4, 11/32 x 3-1/4, 3/8 x 3-1/4, 7/16 x 4, 1/2 x 4 Nut Drive Set