OMPHOBBY M4 Helicopter Swashplate Driver Arm Set(Silvery)OSHM4012S Sale! from 1182 /per Qty. Add to Cart This is a replacement swashplate driver arm set for the OMPHOBBY M4 Helicopters Contents Swashplate Driver Arm-2BearingΦ2xΦ5x2.5-4Washer Φ2xΦ3.2x0.5-4socket cap screw M2x16-2 Qty available:5 SKU:OSHM4012S