You don't even need that. Digikey part number A26534-40-ND are 80position breakaway headers (looks like the connectors on motherboards that IDE drives plug into. You just pull the pins out of the plastic block with a pair of plyers and plug them into the servo connectors and then use a piece of electrical tape to keep them from coming apart if pulled. That part number will give you enough pins to make 26 3pin male to male connectors and it's only 2.48. That's
www.digikey.com in case you didn't know. No soldering no fuss no mess.