I am still a pound puppy and new to the site. Thanks everyone for the great comments !!! I have 2 busse knives, but the scrapper 5 will be my first scrap yard as I just missed the scrap muk. My question is I would like to know what through-hardened SR101 is ??? I have knives in INFI and 154CM. I havent used the INFI, buts its legendary. I love the 154CM I have in my benchmade. But, what is through-hardened SR101 ??? Any info would be extremely helpful.