Powerbuilt Professional Technician impact socket sets are built to meet or exceed ANSI specifications. All sockets, socket accessories and drive tools are constructed of high-grade Chrome Molybdenum (Cr-Mo) steel with an industrial black phosphate finish.

• Powerbuilt sockets are the heart of these sets
• The stealth black finish is enhanced with a laser-engraved size marking that won't rust or wear off - ever
• Beauty is more than skin-deep though. Inside Powerbuilt sockets you'll find precision chamfered hex faces that make it easier to guide them onto fasteners
• And the exclusive Z-Drive hex pattern grabs and turns the flat surfaces of those fasteners to reduce round-off and slipping
• Finally, the center holes are punched through to add a bit more clearance for taller nuts and bolts
• Each socket is protected with a black phosphate finish for the highest degree of durability and corrosion resistance
• Powerful, precise and stylish, Powerbuilt socket sets offer the look, feel and performance hard-working Techs deserve
• A no questions asked replacement policy and lifetime warranty ensure it'll be a long-term relationship