Grobet Swiss Pattern File Diesinker Riffler #915 or #509 6 Inch Cut 0 A comprehensive selection of precision rifflers. All are double-ended and 6" (152 mm) long. Used by moldmakers, tool and die makers, jewelers, gunsmiths, and hobbyists. 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