A FOUR piece combination socket adaptor set. They are manufactured from Chrome Molybdenum (CR-MO) steel for increased strength and durability. Each has a spring ball socket retention fitting. Sizes are as follows: 3/8" (F) to 1/4" (M) 1/4" (F) to 3/8" (M) 1/2" (F) to 3/8" (M) 3/8" (F) to 1/2" (M) Black phosphate finish for protection against corrosion.
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