36V Rear Carrier Battery Holder (Battery not included) 6 PIN connection points (parallel configuration) for models: Step NX (700c Wheel) / Step NX (26″ Wheel) – Metallic Blues Fold – Metallic Teal Fold LS – Metallic Gunmetal Rear Carrier Battery Holder (Battery not included) 6 PIN Connector Controller Compartment (Controller not included) Barrel Lock & 2 Keys