Use this BlueFire R823P medium grit cloth file belt for all light to moderate stock removal applications on metal and wood. Strong but moderately flexible, this belt features a waterproof x-weight polyester backing, a self-sharpening zirconia alumina abrasive and a durable resin bond combine for good grain retention and a belt life up to 30 percent longer than competitive zirconia belts. Ideal for light to moderate pressure tasks, this belt works well on dry or wet surfaces.