Vermont American 20372 1/4-Inch to 18 National Pipe Taper High Carbon Steel Pipe Taps<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Ideal for pipe fittings， cutting internal threads and whenever an extremely tight fit is required</li><li>Four flute design ensures fast and easy chip removal</li><li>Required drill size is permanently etched on the side of each tap</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41ws6mElx3L.jpg" noproxy>