AR390199 Female AMASS XT90 Nero (2)These ARRMA AMASS XT 90 Female connectors should be used on your battery wires when using an ARRMA model supplied with XT 90 connectors fitted to the ESC. The XT 90 connector provides a super reliable, efficient connection between the ESC and battery. Includes 2 x Female AMASS XT 90 Connector 5 x Pre Cut Heatshrink Tubing Features Battery wires need to be soldered to the connector and the supplied heat shrink tubing fitted over the soldered connection