uxcell Straight Shank 8mm Diamond Drill Bit Tile Glass Hole Saw 12 Pcs<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Product Name : Glass Hole Saw;Main Material : Metal</li><li>Cutting Hole Diameter : 8 mm / 5/16";Shank Size (Approx.) : 18 x 5 mm / 0.7" x 0.2" (L*D)</li><li>Total Length : 51 mm / 2";Color : Silver Tone</li><li>Weight : 59g</li><li>Package Content : 12 x Glass Hole Saws</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41YIoBlnc1L.jpg" noproxy>