Amass XT60 Series Cable Harness Connector/Adaptor Y Lead - Connect 2 Batteries to ESC Features:Serial Connection Cable:Series adapter increases voltage for faster speeds.Combines two battery packs together to doubles voltage for high speedChoice of 12AWG (thicker) or 14AWG silicone wire.Rated Temperture : 200°cRated Voltage : 600VCable length: 15cm approx1 XT60 Female to 2 XT60 Male Package Content: As per selected