OMPHOBBY M4 Helicopter countersunk head hexagon socket screw M2.5x5mm OSHM4072 Sale! from 149 /per Qty. Sold Out This is a replacement countersunk head hexagon socket screw M2.5x5mm for the OMPHOBBY M4 Helicopters Contents Countersunk hex screw M2.5x5mm-8 Qty available:0 SKU:OSHM4072