Uxcell a13110400ux0268 Diamond Coated 10mm Diameter Drill Bit Glass Tile Hole Saw (Pack of 6) Product Name : Glass Hole Saw; Main Material : Metal Cutting Hole Diameter(Approx.) : 10mm/0.393&#39;&#39;;Shank Hole Diameter : 6mm/0.236&#39;&#39; Total Length : 50mm/1.967&#39;&#39;;Color : Silver Tone Weight : 46g Package Content : 6 x Glass Hole Saws