HBZ4929
HobbyZone Gearbox (No Motor): Champ, UM T-28 HBZ4929 is compatible with EFLU2600, EFLU2680, HBZ4900, HBZ5600, HBZ5650, PKZU1480, PKZU1500, PKZU1580, PKZU1600, PKZU1680
B17