FUNKEY 76mm CARBON TAIL ROTORS ELECTRICSSpecifications: Length: 76mm Width: 23mm Grip: >= 5mm Hole: 3mm Common Application: .ELECTIC helicopters Notes: Standard replacement part for Predator 60 SE. Unmatched carbon fiber craftsmanship and quality. Perfect spanwise and cordwise balance. That is what Carbon Fiber Rotortech tail blades are all about.