Description: -S2 alloy steel, this batch of head using S2 alloy steel, batch head surface for steel material color, from inside to outside are the same. -Exquisite workmanship, each edge can be accurately locked screws, and the screwdriver head. -Ideal magnetic,can suck the screws easily when used it. -Widely used for manual electric screwdriver, screwdriver, drill, air and other tools, ect. -800 Electric Screwdriver Universal Round Handle Interface Specifications: -Type of shank: 4mm Round Shank -Drive Type:Hex -Surface Treatment: Sandblasting -Material:S2 Alloy Steel -With Magnetism -Hardness：HRC 54-62
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