This is a pair of Deans red two pin Micro Plug non-polarized reversible connectors. These make great connectors for speed controls to engines for micro cars and planes where you need the ability to reverse the polarity of the pins.
Overall length connected: .940" (24mm)
Length of plastic body, connected: .574" (14.6mm)
Pin length, six places: .181" (4.6mm)
Width between pins: .058" (1.4mm)
Requires: Solder, soldering iron (HCAR0775) or soldering gun