Craftool Adjustable Creaser
8072-00 For parallel lines, inside borders, decorative work and more. Adjusts quickly from a fine line to 5/16" wide.
tip: Use this tool to put a creased line around the edge of your sheath. It's purely a decorative detail but it add's a touch of detail that most don't include. I use one of these on every sheath I make. For a deeper line, lightly dampen the leather.