The Grey Pneumatic 3440DL is a 3/4" drive x 1-1/4" 6-point extra-deep length Budd impact socket designed primarily for high-torque applications. Core Technical Specifications Drive Size: 3/4 inch Socket Size: 1-1/4 inch (Fractional / SAE) Output Type: 6-Point hex Overall Length: 9.06 inches (Extra-Long / Extra-Deep) Outside Diameter: 1.85 inches Material: High-quality Chrome-Molybdenum (Cr-Mo) alloy steel Finish: Black oxide coating to resist rust and corrosion