TP Power motors are made of the best materials that are available, and have high efficiencies (>90%) required for the most demanding applications.The TP 4070-CM Series is our most  powerful 40 series up to date, with 75K max burst RPM.  Parameters: Can: SmoothT: 4DKV: 2200Max Amps (A): 264Max Volt (V): 34Continuous Power (W): 5000Max Power (W): 9000 for 10 secondsMax RPM: 75 K for 10 secondsInternal Resistance (Ohm): 0.0024No-load Current (A): 9.8 at 7.5VShaft Diameter (mm): 8mmDiameter X Length (mm): 40 X 107Output Shaft Length (mm): 18Bolt Pattern: 4 - M4 - 25mmWeight: 640 gPole: 4-pole THIS ITEM SHIPS WORLDWIDE. THANK YOU