Micro Fine Tapered Files from Profile Accessories/Alpha Precision Abrasives are ideal for achieving a very smooth surface finish. Micro Fine finishing products are not intended for heavy substrate removal - they′re designed to help obtain a professional finish. Use them wet or dry for removal of any uneven sanding marks that may remain on the surface from use of coarse sanded areas. This product can be used on plastic, wood, metal, and resin projects. This set contains two tapered files. Tapered Files are available in 1000, 2000, 4000, 6000 and 12000 grit . The Micro Fine Tapered Files are one of many Flex-I-File/Profile Accessories tools and modeling products.WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov