Z10A 3300kv New A model with redesigned core. Very high torque and cool running. Good choice for T-REX 450 or Mini Titan E325 recommend 3-4 lipo battery Specification:Diameter : 27.7mmLength : 33mmShaft Diameter: 3.17mmMax Eff: 83%Poles: 8KV: 3300Weight: 67gInput power: 3-4 cells Li-xxx Io: 1.9A Max loading: 35A