* Made of chrome-moly steel construction for strength and durability.* To prevent rust and corrosion, the black phosphate finish absorbs and retains oil, repelling moisture.* 12-point opening is suitable for double hex (12-sided), hex and square fasteners, can grab fasteners quickly at multiple angles.* To prevent round-off under stress, it grips the flat sides of fastener heads instead of the corners.* The through-hole at the drive end locks on the tang of drivers or impact wrenches, so it won't fall off or stick on the fastener head.* Widely used in DIY hand-making, household maintenance, and most general repairs.Specifications:* Socket Size: 21mm* Drive Size: 1/2-inch* Total Length: 78mm / 3-inch* Material: Chrome-Molybdenum Steel (CR-MO)* Finish: Black Phosphate* Color: BlackPackage Content:* 1 x Impact Socket.
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