Product Description Wrench can be used with taps, reamers, screw extractors and other tools that have a square shank. Adjusted and tightened to size by twisting knurled nut. Hanson T Handle Tap Wrench #12 to 5/16" at MidwayUSA $10.49 Buy Now Check Price on Amazon Check Price on eBay Category: Hand ToolsColor: BlacksSize: #12 to 5/16"