Heavy-Duty graded files. The first step in your finishing process. Coarse enough to smooth out even the hardest materials. Available in Fine, Medium, and Coarse 10 packs. These files are highly durable and reusable. Files are 100% waterproof which is a great advantage since they can be used wet or dry. Coated on a tough Mylar backing, the abrasive will with stand bending and twisting without cracking or peeling. These files are light weight multipurpose instruments. The size and hooked end design allows any hobbyist to get into tight spaces and helps sand delicate and obscure project pieces. Don’t settle for poor quality ungraded off cuts for your projects, demand the best!