HDX450SE V4 head system using new Main rotor holder with 4mm Feathering shaft.  It gives the heli smooth rotation and stability under high rotating speed.  With all CNC aluminum alloy materials, this head system is absolutely helpful for the accuracy of movement control and the stability of the flight.

SPECIFICATIONS:

?Metal main rotor housing set x 1
?Metal head stopper x 1
?Screw x 1(M2x6mm)
?Pin x 2(F1.5x18.7mm)
?Aluminum collar x 2(F4xF5.6x1.5mm)
?Damper Rubber x 4(F4xF6.5x2mm)
?Washer x 2(F5.5xF8x0.3mm)
?Stainless steel linkage ball x 2(F4.75xF4.59mm)
?Cross screw x 2(M2x6.5mm)
?Metal main rotor holder x 2
?Thrust Bearing F3-8M x 2(F3xF8x3.5mm)
?Bearing MR74ZZ x 2(F4xF7x2.5mm)
?Bearing MR84ZZ x 2(F4xF8x3mm)
?Feathering shaftx 1(F4x41mm)
?Washer x 2(F2xF6x0.6mm)
?Screw x 2(M2x6mm)
?Screw x 1(M2x12mm)
?M2 nut x 1
?Metal flybar seesaw holder x 1
?Bearing FMR52ZZ x 2(F5xF5xF6x2.3mm)
?Bearing MR52ZZ x 6(F2xF5x2.5mm)
?Collar screw x 2(M2x6.5mm)
?Metal SF mixing arm x 2
?Collar screw x 2(M2x8mm)
?Washer x 4(F2xF3.6x0.2mm)
?Washer x 2(F2xF3.6x0.5mm)
?Stainless steel linkage ball x 4(F4.75xF4.59mm)
?Collar screw x 4(M2x6.5mm)
?Metal washout base x 1
?Collar x 1(F5xF6.5x13mm)
?Washer x 4(F2xF3.6x0.2mm)
?Washer x 2(F2xF3.6x0.5mm)
?Stainless steel linkage ball x 2(F4.75xF4.59mm)
?Collar screw x 2(M2x6.5mm)
?Bearing MR52ZZ x 4(F2xF5x2.5mm)
?Metal CCPM swashplate x 1(F26x11.5mm)
?Bearing 6803ZZ x 1(F18.5xF26x4mm)
?Metal cover x 1
?Metal stand x 1
?Grommet x 2(F13.4x3mm)
?Ball bearing x 1(F10xF5x7mm)
?Stainless steel linkage ball-Long x 1(F4.75x11.5mm)
?Stainless steel linkage ball x 6(F4.75xF4.59mm)
?Cross screw x 6(M2x6.5mm)
?Cross screw x 1(M2x14mm)
?Main shaft x 1(F5x116mm)
?Main shaft lock ring x 1
?Set screw x 1(M3x3mm)
?Metal T type control arm x 2
?Control rod x 2(F4.3x39mm)
?Metal flybar arm collar x 2(F2xF5.5x5.5mm)
?Cross screw x 4(M2x5mm)
?Set screw x 2(M3x3mm)
?Flybar weight x 2(F7.5x8mm)
?Set screw x 2(M3x3mm)
?Flybar rod x 1(220mm)
?Flybar Paddle x 2
?Linkage rod x 3(F1.3x9mm)
?Linkage rod x 3(F1.3x12.5mm)
?Linkage rod x 3(F1.3x32mm)
?SE servo linkage rod x 1(F1.3x19mm)
?SE servo linkage rod x 1(F1.3x33mm)
?SE servo linkage rod x 1(F1.3x28mm)
?Ball link(Long) x 17