OMPHOBBY M4 Helicopter Socket cap screw M2.5x10mm OSHM4081 Sale! from 149 /per Qty. Add to Cart This is a replacement socket cap screw M2.5x10mm for the OMPHOBBY M4 Helicopters Contents socket cap screw M2.5x10mm-8 Qty available:1 SKU:OSHM4081