Want to make professional leather watch strap? For achieve that, Daniel bought almost all world famouse watch straps to do research and developed this making mould. So you will make the SAME SIZE leather strap as the world famouse brand such as PATEK PHILIPPE, Panerai and so on, anyhow, there are too many brands, I just tried my best and summarized the common points of them.
There are a base, a ruler, an adjusting board, a piece of chisel mat, and 20 pieces moulds for watch straps making, I am sure it is the only mould in the world :P
For insurance, I made a tutorial for you, you can download here: How to make leather watch strap