Grobet Swiss Pattern File Knife 8 Inch Cut 0 Tapered in width and thickness, with the knife edge having the same thickness from point to shoulder. The included angle of the sharp edge is approximately 10 degrees. Generally used to file in a slot or wedge shaped opening. Curved knife edge allows for easy filing in restricted areas. Double cut on both sides-Top edge is safe-Knife edge is single cut. 7/8" x 1/5" thick. Swiss Pattern files means a type of fine file used for precision filing of jewelry, instrument parts, and dies. It does not necessarily mean that all Swiss Pattern files are Swiss made. Used by Professionals