Traxxas 3063 TRX Series Battery Connection Wire Harness, 1/16 VXL Use the series harness to combine battery voltage and unlock the 50+mph speed potential of your 1/16 brushless model Proven convenience and performance of genuine Traxxas High-Current Connectors Dual-battery operation requires attention to precautions outlined in the model's owners manual Use Traxxas stock and hop-up replacement parts to get the most out of you Traxxas RTR vehicles This product is made from high quality materials and designed for lasting performance This is for use on RC vehicles such as the Traxxas 1/16 Line Up; consult your user's manual for exact parts listings