Select Options Metric Sae - Fully Polished - Drop Forged - Chrome Plated - Heat Treated - Choice of Sae Metric Sizes - Sae Sizes 6 Pcs: 1/4x5/16, 3/8x7/16, 1/2x9/16, 5/8x11/16, 3/4x13/16 & 7/8x1 Inch - Metric Sizes 3 Pcs: 6x8, 10x12, 13x14, 15x17 19x21 & 22x25 mm Weight: 2.75 Lbs