Made of 4140 chromium-molybdenum steel and hardened to 50-53 HRC. The wrenches are abrasive-blasted to create a finely textured satin finish and then plated with corrosion-resistant nickel. Sizes: 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4″, 13/16″, 7/8″, 15/16″, 1″ Large black modular wrench organizer: 4 pieces Modular wrench organizer label sheet (1/4 – 1-1/2 inch)
