No need batteries or electricity. Security screwdriver set includes 5pcs flat screwdriver set 1/8"x3",5/32"x4",3/16"x5",1/4"x4".1/4"x1-1/2". Constructed from high-quality chromium molybdenum vanadium steel and PP&TPR materials, these screwdrivers are designed for durability and a snug fit on any project.
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