Flex Head Design: The jointed box-end pivots smoothly, letting you navigate obstructions and access fasteners in tightly confined or awkward spaces.12-Point Box End: Delivers a precise, standard SAE fit for 7/8-inch fasteners. Full Polish Finish: Features a mirror-like chrome plating that resists corrosion and wipes clean easily from oil and grime. Made in the USA: Produced under the heritage Armstrong brand, known for highly durable, professional-grade steel drop-forging.