This is the Parallel Battery Connection Wire Harness for use on the Traxxas 1/16 E-Revo and Slash VXL Vehicles. FEATURES: Traxxas High Power Connectors Combines mAh of connected batteries for longer run time YOU WILL RECEIVE: One Wire Harness (two Traxxas Male connectors and one Traxxas female connector) Instruction manual REQUIREMENTS: Installation between batteries and ESC cnh 7/7/09 ir/jxs &