Cold Steel Spear Head Trainer 10.66" Fixed Plain Black Santoprene Blade 6.33" Black Santoprene Handle Now you can practice with some of our most popular knife designs in relative safety with our rubber training knives. Each trainer has been carefully fashioned to look as realistic as possible so they 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.