LENOX Tools Bi-Metal Speed Slot Arbored Hole Saw with T3 Technology， 3-7/8"</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>2X more durable with 50% longer life than previous LENOX hole saws</li><li>Increased wall thickness improves durability and minimizes tooth loss</li><li>Optimized tooth design penetrates metal with ease</li><li>Larger， sharper teeth for faster cutting</li><li>SPEED SLOT staircase design for easy plug ejection</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/41cVH8A9pkL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51EyjHaDflL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51CLqHTNR5L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/619KMA5palL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51o70XSsy0L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51m6RlvVeIL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51nirvGCMJL.jpg' noproxy></br>