I bought these years ago when I first started throwing knives.. I throw very hard and these knives can take an ungodly amount of abuse. I can recall missing my target and hitting the concrete wall behind it, all I could think was great there goes one of the new knives. But low and behold the knife didn't even have a scratch in it!!! I kept them for two years "throwing every day possible" and they were eventually stolen from me.. I am very much looking forward to buying another Great set of Dragon Bolts, Thanks HANZO!!!!