Description:  -The InnerShaft and Aluminum Main Rotor Hub for Blade MCX is designed to improve the strength of the stock innershaft and stock plastic main rotor hub. The new innershaft and main rotor hub includes a new strong steel innershaft, a bigger and stronger steel spindle shaft and a precision CNC aluminum main rotor hub. This system not only reduces the chance of broken main rotor hub and innershaft but also provides a new great look for your blade MCX. Includes:  -CNC aluminum main rotor hub-Steel innershaft-All screws Requires:  -Loctite (recommend #242) all the screws. Weight:  0.5g Usage:  -E-Flite Blade MCX-ESKY Lama 2 Instruction:  -Included in the package