Trex 450 feathering shafts sold in pairs with or without dampers in 6 different sizes and will fit all align trex 450s and most clones and similar helicopters.

If unsure on what you need please ask I m happy to help

Picture shows from left to right

4x54mm anti shoot newest version

4x51mm DFC & L

4X51mm pro sport & early flybarless

4x41mm v2,v3,se

3x41mm early pro &v1

4x 54mm no shoulders not shown