OMPHOBBY M4 Helicopter Flange bearing ∅2x∅6x3mm OSHM4090 Sale! from 387 /per Qty. Add to Cart This is a replacement flange bearing ∅2x∅6x3mm for the OMPHOBBY M4 Helicopters Contents flange bearing ∅2x∅6x3mm-2 Qty available:1 SKU:OSHM4090