OMPHOBBY M4 Helicopter Tail Bellcrank Arm OSHM4032 Sale! from 414 /per Qty. Add to Cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. This is a replacement tail bell crank arm for the OMPHOBBY M4 Helicopters Contents Tail Bellcrank Arm-1Socket cap screw M2x4-2 Qty available:2 SKU:OSHM4032