This is a Mulplex style MPX connector. It can be used for batteries, ESCs and motors. It is also ideal for constructing multi-connection servo harnesses for large gliders.
Rated to 35 Amps continuous or 60 Amps for a 60 second burst when used on a 3x2 pin configuration. A pair of connectors weighs 2.4g.
Item is for 5 pairs (10 pieces).