Used in wet sanding, coarsest grade available for fine featheredging. Would require finer featheredging. Most flexible backing with more consistant scratch pattern make this 3M's best wet sanding product. Product Features:Premium, aluminum oxide mineral, an improved paper backing and an optimized constructionPerformance advantages: Improved rate of cut, increased abrasive life, increased flexibility and uniform, consistent finishResin bonding resists deterioration from heat, extending the life of the abrasive clothWaterproof material allow for easy debris removalCan be easily cut and folded to fit any hand tool or work piece crevice
