Cold Steel Karambit Trainer Now you can practice with some of Cold Steel's most popular knife designs in relative safety - with their rubber training knives!The Cold Steel Tiger Karambit Trainer has been carefully fashioned to look as realistic as possible so it can be effectively used in solo practice, training drills, disarm drills, and demonstrations and any other activity where you want a reasonably close approximation of realism but not the extreme danger and risk associated with an actual knife.