The SK FlexZone Deep Impact Socket features extreme, hardened ends designed to withstand greater torque, and a malleable middle to provide more flexibility and prevent fracturing, to deliver up to 58 percent longer tool life, the company says. The FlexZone’s durability helps limit job interruptions due to failing sockets, improving productivity. The company’s design and manufacturing process for steel and heat-treating delivers a durable product for tough applications. These sockets are available in a 7-pc Fractional FlexZone Deep Impact Socket Set and 10-pc Metric FlexZone Deep Impact Socket Set.