Nay, DIY item. I wouldnt trust a shop bought item myself, had some cold solder joints on battery charger leads so its better to do it your self, that way you get the exact length you need too. :)
I would use either electrical tape, or plasti-dip and brush it on.
Heres my effort, basically the same thing only with 5.5mm plugs:
Nicely done...may have to use this idea in the near future
1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S