House Brand Dentistry Hedstrom Files 31mm #80 6/Box. Stainless Steel Hedstrom Files. Hedstrom Files are stainless steel, ISO color-coded hand files for the quick enlargement of the root canal. They are pre-mounted with silicone stops and designed with peanut-shaped handles with a ribbed texture for enhanced tactile feel and better control during use.Hedstrom Files provide optimal precision and flexibility when preparing and adapting to curved canals. Available in 21mm, 25mm, or 31mm, in 6 files per pack.