https://www.mccoys.com/shop/p/0329524-052303-32/irwin-91831-nutsetter-516-in-drive-1-78-in-l-14-in-l-shank-hex-shank
91831 Nutsetter, 5/16 in Drive, 1-7/8 in L, 1/4 in L Shank, Hex Shank
Sku: 32109060
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San Marcos
Nut Drivers:Irwin 91831
Made of shock-resistant and heat treated S2 steel for maximum strength and hardness, magnets are four times more powerful than common magnets. Positive retention of the screw improves installation rate. Universal 1/4 in hex shank fits most power tools and quick-change chuck Adapters. For use with sheet metal screws and other hexagonal head fasteners.
Drive Size
5/16
Shank Type
Hex
Shank Length
1/4
Material
S2 Steel
Length
1-7/8