OMPHOBBY M4 Helicopter OMPHOBBY 71mm Tail blade OSHM4047 Sale! from 542 /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 blades for the OMPHOBBY M4 Helicopters Contents OMPHOBBY 71mm Tail blade-4 Qty available:4 SKU:OSHM4047