Product info Diamond 5-Blade 50-90 size IGD Rotor Head System These high performance scale rotor heads consist of an all metal assembly, dual ball bearing heavy duty plastic blade grips plus thrust bearings which feature the I.G.D. system (Individual grip damping) to dampen each blade individually to eliminate turbulence vibration which is crucial for super smooth flying with mulitple rotor blades. Features: Designed especially for scale or sport flying, using high performance components. Incredible Super scale appearances. Individual Grip Damping system ( I.G.D ) for super smooth forward flight. Solid aluminum hub, blade grip is selectable for delta 3 or aerobatic setup. Uses dual ball bearings & large thrust ball bearing in each blade grip. For all helicopters with 10mm or 12mm main shaft. 16mm blade root. 5mm bolt holes. 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. Product name Diamond 5-Blade 50-90 size IGD Rotor Head System Product number CN1105   Not in stock  Price for 1 399,86 EUR (incl. VAT)   «-Back  USDDKKEUR     Show without VAT   Tip   Print If you have any questions feel free to call us.