OMPHOBBY M4 Helicopter Bearing ∅6x∅10x3mm OSHM4089 Sale! from 387 /per Qty. Add to Cart This is a replacement bearing ∅6x∅10x3mm for the OMPHOBBY M4 Helicopters Contents bearing ∅6x∅10x3mm-2 Qty available:1 SKU:OSHM4089