The Grey Pneumatic 4078D is a 1-inch drive x 2-7/16-inch deep, 6-point SAE impact socket designed for high-torque industrial and automotive applications. Built out of premium chrome-molybdenum alloy steel, it utilizes a proprietary high-torque drive design that transfers pressure away from the corners to prevent fastener rounding. Key Specifications Drive Size: 1"Socket Size: 2-7/16" (SAE)Configuration: 6-Point Hex Depth Type: Deep Length Material: Chrome-Molybdenum (Cr-Mo) steel Total Length: 4.33 inches Weight: 5.61 lbs Bolt Clearance Depth: 3.15 inches