Well here is my 5th completed knife. I dontated it to a silent auction for a good cause and it brought in $155. It is 5160 spring steel, with a full flat grind and convex edge. It is a full 1/4 in at the spine with a taper starting at the end of the handle to the tip. The handle is Cocobolo treated with linseed oil. Has a shaving sharp, sticky edge, but you could chop or baton with it no problem. I dont think you could break it unless you were trying very hard. Any way just looking for some criticism or let me know if you think it was worth the $ they paid for it.