The Grey Pneumatic 3170D is a 3/4-inch drive x 2-3/16-inch-deep length, 12-point heavy-duty impact socket. It is specifically engineered for professional automotive, maintenance, and high-torque industrial applications. Key Specifications Manufacturer: Grey Pneumatic Drive Size: 3/4-inch Socket Size: 2-3/16 inches (SAE)Socket Depth: Deep well length Configuration: 12-point design Material: Premium Chrome-Molybdenum (Chro-Moly) alloy steel Weight: 3.2 lbs Compliance: Meets or exceeds ANSI B107.2 specifications