Primarily used in the metalworking and woodworking industries, the 3M™ Wetordry™ Paper Sheet, 413Q, is a silicon carbide, closed coat product bonded with a waterproof resin. It works well for sanding old finishes, fine featheredging, surface work and can be used wet or dry.The 3M Wetordry Abrasive Sheet 413Q is best suited for metal sanding and finishing thanks to its versatility and fast cutting abrasive material. Its flexible, A-weight paper backing provides smooth operation and durability and can conform to the shape of contoured parts for consistent finishing.