Armstrong 34-850 3 Piece Black Oxide Adjustable Wrench Set Hex Jaw Design Allows for a More Secure Fit to the Fastener Reducing the Chance of Slipping Handle is Up to 70% Wider for More Comfort Lessening Pressure on the Hand, Less Hand Fatigue Large Serrated Knurl for Smooth Easy Jaw Adjustment Manufactured From High Alloy Steel Using the Most Up-To-Date Manufacturing Process and Heat Treat for Greater Strength and Durability Manufactured From High Alloy Steel Using the Most Up-To-Date Manufacturing Process and Heat Treat for Greater Strength and Durability