ACHIEVE OPTIMAL EFFICIENCY: Impact sockets provide a perfect fit to powered tools, and therefore will avoid unusual deformation or damage to the tool's square drive. S850D 1' Drive Deep Impact Socket 3-1/4' - This impact socket is constructed from chrome-molybdenum steel, phosphate manganese coated for corrosion resistance and laser etched with markings and output size Chicago Pneumatic impact wrench sockets are made from Chrome-molybdenum Steel and have a Phosphate Manganese surface finish for extreme wear resistance, maximum torque, and preventing fastener rounding. Tundra 1-1/4-Inch Receiver Hitch Towing Starter Kit with 2-Inch Ball; 3 Impact Socket Chicago Pneumatic S850D Deep - 8940164393 - Tools 26mm Socket ENSURE SAFETY: Impact sockets (made with Molybdenum chromium steel) are designed to support and absorb the momentary shock of each impact, therefore preventing cracks or breaks, and prolonging the life of the socket. Chicago Pneumatic Chicago Pneumatic S850D 1 in Drive Deep Impact Socket, 3-1/4 in - CP 8940164393 SKU CP 8940164393 Now: $223.22 Easy to read laser etched marking with output size, and model number. To keep your CP tools performing optimally and reliably, we advise the use of Chicago Pneumatic Genuine accessories.