Ozubené kolo 121T pro vrtulníky 450 - helical šikmé zuby, musíte mít také speciální pastorek
Tarot 450 PRO Helical 121T Main Gear - White (TL45156-01)
This is a high quality nylon helical main gear for the HK450, Trex 450, Tarot 450 and may fit others as well.
Specs:
Tooth Count: 121
Tooth Type: helical (must be used with helical pinion gear)
Color: white