Edge tools are often used to round the angular rims up.
Put the groove of the tool on leather rims properly, then shove it toward the corner with the constant pressure and speed every minute.
LC Super PRO Edge Tool has pursued the fine sharpness and the sustainability.
This set consists of 8 tools from No.00 to No.6.
This tool usually does not need to be sharpened so often. When it becomes dull, apply jewelers rouge on a leather crap and then, strop on it.