Click to expand Tap to zoom Bell Helicopter H-13, H-23 1960 Advance Sheet by Bell Helicopter old Sale $40.00 | / SKU 16795:R 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity 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. Types & Nomenclature of Main And Tail Rotor Blades