The QEP wetDRY diamond hole saws are designed for the easy, fast and accurate cutting of porcelain, ceramic and glass tiles. These hole saws feature 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.Advanced 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 saws12X 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 installersEasy-to-clean by rinsing with hose or in clean water after each use