Strong, functional, and as durable as you can ask for, Stanleys DWMT74190OSP Deep Socket is a real bargain! This buddy is designed for both corded and cordless impact drivers and wrenches. 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. Its recessed corners effectively distribute torque across flats. Made of chrome vanadium steel, this Stanley Deep Socket is hard, tough, and never brittle. So when facing repair tasks, either minimal or extensive, worry no more about bending and breaking! With its superior quality make, you also have the rust-resistance advantage. This Stanley DWMT74190OSP is a 12-point socket with a 5/16 socket size and a 3/8 drive size. With twice the number of starting positions, working in tight spaces and hard-to-see locations has never been this easy! Its thinner-than-wrench-sockets structure allows you to access tough areas. 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!