*The store has not been updated recently. You may want to contact the merchant to confirm the availability of the product.
This is a "tuning blade" for CoAxial helis in the 450mm rotor diameter group, like the ESKY Big Outdoor Lama, Walkera 53#xyz or compatibles.
It is made by the German company PHASE II.
The main difference to other aftermarket blades is the design of the blade tip that is meant to lead to a cut-off of the air current in this area to lower lift and improve FFF.
It is also Carbon Fiber reinforced and therefore one of the less flexible, harder and more resilient blades to choose from.