# The material of this v2 Xtreme blade is different to the first generation blade (ESL005, ESL006 series). V2 is made of harder plastics, less flex than the v1. # Surface area also reduced around 15% compared to the v1, the lifting force is smaller but the advantage is the head speed (rotor rotation speed) will be higher, thus the helicopter is more responsive and increase agility. # We highly recommend this v2 blade to advanced players, who have mater the control of coaxial helicopter. # For beginners, we recommend you to get the v1 blade (ESL005, ESL006) instead. Because the v1 blade is almost indestructible and provide better stability in hovering and flying.