The Gearmotor Power Connector Boards add versatility to any gearmotor. These boards simply slide over the motor terminals and solder in place. The pre-installed .100 spacing row pins allow plug-and-play connectivity to several different plug styles (JST, Rx battery connector, male servo connector). The plug-in makes switching polarity, swapping motors and reconfiguring your robot without firing up the soldering iron quick and easy. Each board has multiple holes which can be utilized to run additional wires to the motor or to daisy-chain multiple motors. Sold with 90 degree header pins pre-soldered to the board. This board has a 32mm diameter.