3/8 Quad-Cutter Glass Drill 3/8 x 3-1/2" quad-cutter glass drill use water - tungsten carbide tip QGD38 $11.950/ea
1/4 Razor-Cutter Glass Drill 1/4 x 4" razor-cutter glass drill use water - tungsten carbide tip RGD14 $7.290/ea
1/2 Quad-Cutter Glass Drill 1/2 x 4" quad-cutter glass drill use water - tungsten carbide tip QGD12 $17.390/ea