Hay StZ,
These are triple servo connector plugs, that I purchased from "Tail Dragger R/C" and allow you to plug in three servos into the fuselage with one connection. Since I have a twin engine model, with multiple servo connections...I needed to connect six servo connections from each wing half's, into the fuselage to set up the model to fly. By using two-triple servo connectors for each wing, I only had to connect four plugs to connect the wings into the fuselage...not 12 servo connectors. It cleans up the wing and fuselage connections and makes a simple chore to mount the wing. By color coating the four multiple plug connector, you will not miss connect any servo to the receiver and besides being quick and easy...it also looks kind of cool.
http://www.taildraggerrc.com/exclusi...nels-one-plug/
There are now other products out in the modeling world that will allow you to connect up to four servo's into one plug connector.
I use and highly recommend HD1501BBMG servo's. I buy mine from Troy Built Models and the last time I purchased these servo's from them, I got them at less then $13.00 a servo. I've used these servo's for years and I've never had one fail yet. These are powerful with an excess of 230"/#'s of torque with 6 volts. These servo's are the same size as any standard servo, in most cases, are cheaper then most standard servo's from any radio manufacturer and are the best servo deal I can find. They are reliable, standard size, so fit into most all model applications and work. I only use five cell nickel batteries in my models now and all my models fly with HD servo's and nickel batteries.
http://www.troybuiltmodels.com/items/HD-1501MG.html
Soft Landings Always,
Bobby of Maui