The spacing in between the prongs is listed. However this actually means that de stitchspacing is approx. 1 to 1,5 mm bigger.
example: 2 mm spacing is a stitchspacing of approx. 3 mm.
The book 'Lacing & Stitching for leathercraft' and the book 'the Art of Handsewing Leather' contains a clear explanation with text and illustrations of handsewing with leather. In the related products on this page below you can find the links to these books.
|Title||Diamont stitching chisel 1 prong, 88043 (ea)|