This is the all new Blade 350QX 2.0 version with the new Xtreme Production Carbon Fiber Props test flight. The carbon props are a direct fit on the motors and don't need prop adapters. Link to Blade 350QX 2.0 Firmware: http://helipartsdirect.com/index.php?route=product/search&search=350%20qx%202.0
Link to Carbon Fiber Props: http://helipartsdirect.com/index.php?route=product/search&search=carbon%20fiber%20prop