Save money and resources by repairing or replacing faucet components, rather than replacing the entire unit. Zurn's ceramic disc cartridges are made of heavy-duty cast brass for AquaSpec faucets (part no. 59517006) and stop leaks that originate from the handle. Ultradurable and expected to last for up to 1 million cycles. This short, 2 1/8-in. cartridge is for quarter-turn faucets and has an exposed chrome cartridge retaining nut. Intended for the left-hand cold-water handle; opens counterclockwise and closes clockwise. When you need a replacement part for repair or maintenance of a faucet, trust Zurn for genuine, reliable parts.