The QEP Xtreme Series Diamond Hole Saws are designed for easy, fast and accurate cutting of porcelain, ceramic and glass tiles. This 1/4" hole saw features a special diamond grit edge for faster and smoother cuts, while using less water than conventional diamond drill bits. Simply dip the hole saw into water and drill the desired hole for professional quality and results.Ideal for cutting 1/4 in. holes in ceramic, porcelain and glass tiles with minimal water useAdvanced metallurgical technology bonds diamond grit to chrome alloy steel base to produce a long lasting cutting edgeExtremely durable and built to last longer than conventional diamond drill bits and standard hole saws12 times longer lasting than standard hole sawsSimply dip in water, no need for a constant water delivery system, for quick and easy useFlexibility to be used in wet or dry cutting conditions is preferred by professional flooring installers