FUNKEY 105mm CARBON TAIL ROTORS 60-90 SIZESpecifications: Length: 105mm Width: 30mm Grip: > =5mm Hole: 3mm Note: These are the standard replacement tail blades for Predator Gasser, Gasser SE, Carbon Gasser, 90 max, 90 carbon max. Unmatched carbon fiber craftsmanship and quality. Perfect spanwise and cordwise balance. That is what Carbon Fiber Rotortech Pro-Series tail blades are all about.