Features and Benefits:?Clearly marked for easy identification?Stainless steel resists rust for a lifetime of use?Compatible with all crimping tools that accept W dies.?Hydraulic crimpers and cuttersCrimp dies and accessories allow crimpers to crimp a range of connector styles. Placed in the jaws of compatible crimping tools, crimp dies apply equal pressure around the material to ensure a secure coupling. Cutting heads enable tools to cut cable and guy wire.