3/16 Quad-Cutter Glass Drill 3/16 x 2-3/4" quad-cutter glass drill use water - tungsten carbide tip QGD316 $6.590/ea
3/16 Razor-Cutter Glass Drill 3/16 x 4" razor-cutter glass drill use water - tungsten carbide tip RGD316 $6.790/ea
5/16 Quad-Cutter Glass Drill 5/16 x 3-1/4" quad-cutter glass drill use water - tungsten carbide tip QGD516 $9.590/ea