1. [Perfect Replacement]The 64mm 11-blade fan propeller with brushless motor is a perfect replacement for RC model aircraft.2. [Rigidity-Toughness]Using composite materials for processing and injection molding, this lightweight power system has excellent rigidity and toughness.3. [Efficiency ]In order to ensure the perfect balance of the bucket, the bucket will install the air duct in the correct position, and its sound and efficiency can be comparable to that of metal.4. [Excellent performance]A good thermal performance system can enable the engine to run more efficiently, provide the best performance, and at the same time, further extend the life of the engine.5. [Lightweight - high quality]Small size, light weight, exquisite design, strong anti-interference ability.64mm Motor 3500KV Specifications:KV: 3500KV (4S Lipo)Number of Batteries (Lipo) : 4SMaximum Voltage: 16.8 VMaximum Continuous Current (A)/60 s: 52ATotal Power Load: 874WMax thrust: 1460gRecommended ESC: 50ARecommended Battery: 35C 4S 3500mAh (NOT included)Material:composite materialcolour:BlackPackage Contents:1 x Fan PropellerOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.