OMPHOBBY M4 Helicopter Flange bearing ∅5x∅13x4mm OSHM4091 Sale! from 387 /per Qty. Sold Out This is a replacement flange bearing ∅5x∅13x4mm for the OMPHOBBY M4 Helicopters Contents flange bearing ∅5x∅13x4mm-2 Qty available:0 SKU:OSHM4091