This is a simple yet effective R/C Servo Wire Extension Clip... shown is one made in clear PLA, Includes a slot to slide your R/C servo wires/connectors/shells into once they are connected together, ensures they do not separate when in use, remove by simply pushing your thumb up into the 1/2 circle cutout on the bottom of the clip... two tiny angled outcrops on the sides of the clip hold the connectors secure... simple yet effective! ;)
Video:
https://www.youtube.com/watch?v=2NNsxrPdHtE
Note: A dual clip version of this can be found here:
http://www.thingiverse.com/thing:878587
servoclip8.stl | 48.3KB |