Morris Products 13482 Carbide Tipped High Speed Steel Hole Saw Cutters, 2" Size, 1-1/2" Conduit Carbide Tipped High Speed Steel Hole Saw Cutters - Our Tungsten Carbide Tipped Saw is extra durable for long life. Carbide Tipped Saw For Hard Materials Tungsten carbide tips are strengthened with the latest brazing technology ensuring a longer drilling life - 10x longer than standard hole saws Carbide Tipped Saw with Precision ground teeth cut smooth burr-free holes with ease Split-point pilot drill prevents walking & allows accurate hole placement