Delivers up to 10x more cuts and is 5x faster than standard bi-metal hole saws Drill wood, MDF, plywood, fiber cement board, porous concrete block, some brick, ceramic wall tile, plastic, and PVC Use with Spyder’s Rapid Core Eject arbor system to eject cores without prying, quickly change diameter, cut at an angle, and enlarge existing holes Tungsten carbide tipped for extended life, clean cuts, and extreme material drilling versatility Universal thread compatible with Spyder arbor/pilot bits and other universal hole saw arbors