Boston Precision Tools   dynamic edge top nut file (precision tip) .010-.026

Boston Precision Tools   dynamic edge top nut file (precision tip) .012-.032

Boston Precision Tools   dynamic edge top nut file (precision tip) .013-.036

Boston Precision Tools   dynamic edge top nut file (precision tip) .016-.042

Boston Precision Tools   dynamic edge top nut file (precision tip) .017-.046

Boston Precision Tools   dynamic edge top nut file (precision tip) .026-.050

Boston Precision Tools   dynamic edge top nut file (precision tip) .036-.055

Boston Precision Tools   dynamic edge top nut file (precision tip) .045-.085

Boston Precision Tools   dynamic edge top nut file (precision tip) .065-.105

Boston Precision Tools   dynamic edge top nut file (precision tip) .075-.130