The Hillman GroupThe Hillman Group 35164 Hex Washer Head Self-Drilling Screw 12 x 1-1/2 25-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>They are used in wood， fiberglass and metal</li><li>Self-drilling or self-tapping metal screws increase productivity by reducing the number of steps required to screw together pieces of metal</li><li>Zinc-Plated</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31UpAyLdiyL.jpg" noproxy>