Oka Pro Stitching Divider Leatherworking Leather Craft ToolsFor marking seam lines for hand stitching and double stitching. With leather can be fixed with a guide , you can draw an extra thin lines without cutting leather. The guide is adjustable from minimum 1mm to maximum 12mm thickness. The guide holds leather tightly, line will not go off the track. Replaceable head can be adjusted according to leather thickness. Made in Japan