The 1/2" Drive Stubby Impact Socket 21mm from JB Tools is designed for heavy-duty applications, providing exceptional torque and durability. Crafted from high-quality chrome molybdenum steel, this socket ensures longevity and resistance to wear. Its compact design allows for access in tight spaces, making it ideal for automotive and industrial use. The socket features a 21mm size, perfect for various fasteners, and is compatible with standard 1/2" drive ratchets and impact wrenches. This tool meets ANSI standards for quality and performance, ensuring reliability in demanding environments.