Agitated by stubborn fasteners? Quit hyperventilating and switch to Stanleys DeWalt DWMT74634OSP Fractional Bit Socket. This socket bit is designed to defy high torque and repetitive application of force even in the most extensive projects. Strong, functional, and as durable as you can ask for, Stanleys DWMT74634OSP Socket is a real bargain! Proudly featured are its knurled beauty rings that provide a firmer grip surface, reducing hand slippage. This allows you to hold fasteners in place more securely. Made of chrome vanadium steel, this Stanley Socket bit is hard, tough, and never brittle. So when facing repair tasks, either minimal or large-scale, worry no more about bending and breaking! With its superior quality make, you also have the rust-resistance advantage. This hexagonal drive bit socket has a 3/8 drive size and a 7/16" bit size. This little man is an indispensable tool for mechanical work involving components, big and small. Fill your tool box with only the best tools! Anyone who has professionally worked with sockets and wrenches knows that Stanley produces the best bang of the buck when it comes to the finest tools in the biz!