OMPHOBBY M4 Helicopter Bearing ∅8x∅14x4mm OSHM4086 Sale! from 387 /per Qty. Add to Cart This is a replacement bearing ∅8x∅14x4mm for the OMPHOBBY M4 Helicopters Contents bearing ∅8x∅14x4mm-2 Qty available:1 SKU:OSHM4086