Diamond 5-Blade 50-90 size All Metal Rotor Head System

These high performance scale rotor heads consist of an all metal hub assembly, dual ball bearing blade grips with thrust bearings plus thrust bearings which feature a solid damper-less system to eliminate turbulence vibration which is crucial for super smooth flying with multiple rotor blades. The center hub is a machined single piece unit which provides the rigidity needed to perform under any conditions.

For all helicopters with 10mm or 12mm main shaft. 14mm blade root. 5mm bolt holes.

Pictured are old 1-piece blade grips ( CN2510 ). Now comes with updated 2-Piece blade grips: Metal Main Blade Grips (2-piece version) (CN2510A).

This rotorhead requires main blades with 5mm bolt holes. Using this on a 30 or 50 size RC helicopter (which typically uses blades with 3-4mm bolt holes) may require you to enlarge your main blade bolt holes to 5mm.

Head button is not included and is optional.