DUMBORC X4 2.4Ghz 4 Channel RC Radio Transmitter and Receiver X6F

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ATA HOBBY DUMBORC X4 2.4GHz 4-Channel RC Radio Transmitter and Receiver X6F w...

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DUMBORC X4 2.4GHz 4-Channel RC Radio Transmitter and Receiver X6F with Fail

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DUMBORC X4 2.4GHz 4-Channel RC Radio Transmitter and Receiver X6F with Fail-Safe