OMPHOBBY M4 Helicopter Bearing ∅2x∅5x2.5mm OSHM4087 Sale! from 491 /per Qty. Sold Out This is a replacement bearing ∅8x∅14x4mm for the OMPHOBBY M4 Helicopters Contents bearing ∅8x∅14x4mm-2 Qty available:0 SKU:OSHM4087