Talking Steel: CPM-M4
4:18
CPM M4 It's not hard... to understand.
5:57
Dull to sharp M4 Steel - 4 minutes real time
22:20
Steel Carry and Review: CPM M4
27:56
My Top 5 Favorite Knife Steels & Why
8:40
Fashion or Function? Mirror Polished Edge on M4 Steel Comparison
12:31
The 3 Best Knife Steels According To Science! || THE Knife Steel Nerd Guide To Knife Steels.
13:28
K390 - The Best High Edge Retention Knife Steel?
7:51