This is a replacement One way bearing for the Align 450 series of helicopters. It fits onto the one-way bearing under the main gear and the transmits
the power from the main shaft to the main drive gear and autorotation
tail drive gear and allows the rotor system to rotate freely if the
motor stops turning. Package includes one 6x10x12mm HF0612 One-way bearing.
This product was added to our catalog on November 19, 2007