- Drop Forged- Chrome Vanadium Steel- Choice of Sae Or Metric Sizes- Sae Sizes9 Pcs: 1, 1-1/16, 1-1/8, 1-1/4, 1-5/16,1-3/8, 1-7/16 & 1-1/2 Inch- Metric Sizes9 Pcs: 26, 27, 29, 30, 32, 35, 36 & 38 mm1 Pc: Plasti