Features: Pole 12 Slot Hi-torque Motor Design CNC Machined 6061 T6 Billet Aluminum Heatsink Can High Purity Copper Windings Maximizes Efficiency High RPM ABEC5 Oversized Bearings Universal fit,fits all 1/8 brushless cars-multi-mounting system for M3 or M4 screws Precision balanced rotor,smoothness for best reliability and maximum RPM Stator - Super Thin (0.2mm) Laminations Removable/Replaceable Rotor Precision Engineered for Maximum Energy Conversion