Slurry coated polishing strips are strong and durable. Unique Rayon and special propitiatory backing material sets them apart from traditional polishing paper, and results in a consistent uniform finish. The blend of various types of micron particle minerals is applied to each strip in a slurry coating process. Abrasive is Silicone Carbide. The micron grading technique produces particles of the same size and shape to achieve a consistent finish every time. The Slurry Coated Strips are perfect for hard to reach places and provide consistent results. For Wet or Dry Applications Nine assorted grits in each pack: 360 Grey 400 Orange 600 Brown 800 White 1000 Red 1200 Green 1500 Purple 2000 Yellow 4000 Blue Pack of 18 Size: 1.875" W x 7" L, (12 strips per sheet)