IRWIN 373400BX 4-Inch Bi-Metal Hole Saw
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<b>[Product Information]</b><br>
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<li>Bi-Metal Construction - for toughness and long life</li>
<li>Electron Beam Weld - for stronger, longer lasting teeth</li>
<li>4/6 Variable Pitch Teeth - for reduced noise and improved performance</li>
<li>Variable Depth Gullets - provides more efficient chip clearance</li>
<li>Will cut holes in aluminum, copper, iron, stainless steel and zinc.</li>
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