Disston E0102335 1-1/2-Inch Blu-Mol Sheet Metal Hole Saws Boxed， 38mm<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Ideal for electrical and plumbing tradesman</li><li>Hole saw has thin .020-Inch sidewall balde thickness which allows for faster cutting and longer battery life. Ideal for chargeable impact drivers</li><li>Special 8 TPI tooth design for smoother cuts in sheet metal</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41aYpEwIn%2BL.jpg" noproxy>