MK Morse MHS70 Bi-Metal Hole Saw， 4-3/8" Diameter</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Patent Pending tooth set design optimized to remove material faster</li><li>New cap reduces runout and vibration</li><li>New side slot increased leverage for faster， easier slug removal</li><li>New exterior red coating reduces side wall friction for efficient cutting</li><li>Heavy duty .050 side wall for greater stability</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/31r-QtXFTGL.jpg' noproxy></br>