Description:   -The Precision CNC Main Frame is designed to improve perfomance and direct replace the plastic stock main frame on the Blade MSR helicopter. The Main Frame is 100% CNC machined aircraft aluminum to provide best precision on all axis and rigid to reduce unwanted vibration. More than that, the Aluminum Main Frame is also dissipating the heat from the main motor to increased efficiency and performance during operation. And yet, it is very light, only 0.1gram over stock plastic frame. Light weight and stylish CNC Aluminum Frame design will brings better performance to the  E-FLITE Blade MSR helicopters.-Silver anodizing version. Includes:  -CNC Aluminum Main Frame-Two (2) bearings Requires:  -Loctite (#242 is recommended)-Assembly Weight:  1.6g Usage:  -E-FLITE Blade MSR only.  Instruction:  -Included in the package Features: 100% Precision CNC machined Aluminum and Carbon Fiber Direct replacement of the flexing stock plastic frame Precision CNC aluminum main frame to eliminate all unwanted flex Strong aircraft aluminum material for better stability.