Shop Cold Steel Leatherneck S/F Trainer Black. Cold Steel has created rubber training knives for you to practice in relative safety. This rubber training version of the Leatherneck S/F model. It 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. Summary of Cold Steel Leatherneck S/F Trainer Clip Point Rubber Black Knife (Black Stonewash) CS 92R39LSF Construction: Santoprene; Color: Black; Overall: 12″; Blade: 7″ l Rubber; Handle: Black l Rubber; Other Info: One piece rubber construction. Bulk Packed.