5mm!
This is a decent item at a low price which could be improved with a bigger tang, say 75mm. The spec. Claims it's only 3mm. thick which I took with a pinch of salt! It's actually 5mm. which gives a good heft for Bushcrafting without making it too heavy for a backpack. It comes with a decent finish & a ready to use edge which can be easily honed to shaving sharp. I found it easy to etch with my own design & I fitted it with an Ash handle. Recommended at only £13.