Package included: Male JST to Female JR Cable 1(22AWG,10cm) Female JST to Male JR Cable 1 (22AWG,10cm) 1 Male to 2 Female Y Splitter Cable 1(20AWG,15cm) 1 Male to 3 Female Y Splitter Cable 1(20AWG,15cm) 1 Female to 2 Female Y Splitter Cable 1 (20AWG,15cm) 1 Female to 3 Female Y Splitter Cable 1(20AWG,15cm) 1 Male JR to Female JST Y Splitter Adapter Cable 1(20AWG,20cm) Features: They are special for Traxxxas car truck crawler mini RC helicopter and indoor 3D plane. also can used for HSP Redcat RC4WD Tamiya Axial SCX10 D90 HPI RC car. great for small Lipo and NiMH connection. The Male to Female Y Harness can be used to power 2 cooling fans, Plug the JST male connector on your receiver, then you can connect the 2 cooling fans on the JST Female connector, also can run other parts which are in JST male plug, such as lights, winch. The Female to Female Y Harness are used for TRX-4 ESC, it allows to be powered by TRX-4 ESC and run the lights, winch, cooling fan at the same time. JST to JR Adapter cable can be use to power your device from a battery easily