Irwin 5/16" Lobular Design Nutsetters have universal 1/4" hex shanks that fit most power tools and quick-change chuck adapters. Made of shock-resistant and heat-treated S2 tool steel for maximum strength and hardness, the lobular design reduces stripping damage by driving the fastener on the sides instead of forcing the corners to turn. The magnetic retention of the screw improves installation rates. Provides more clearance on the corners of the fastener where paint build-up can occur. For use with sheet metal screws and other hexagonal head fasteners. Size is 5/16", socket body diameter is 1/2", and overall length is 2 9/16". 3-Pack.
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