12034 “HEX” Drive Universal Coupling Combo Pack (worm gear not included)
Includes: Couplings to connect 4 “Hex” Flywheels or do two locos!
A-Line Universal Hex Drive Couplings will work with most hex flywheels and our part 20005 (not included)
Slide hex end on square shaft, cut to length, glue. Simple and easy.
