1、Increasing Efficiency: The brushed motor features high purity copper windings, which maximize efficiency 2、High Speed Bearing: The 540 brush motor has a high speed oversized bearing that you can use with confidence 3、Removable and Replaceable: The 540 80T brushed motor has removable and replaceable rotors, which makes it easy for you to change 4、Strong Magnet: The RC brush motor has a high strength magnet, which brings stable and reliable brush motor performance to the RC car 5、Lasting Operation: The brushed axial motor has excellent torsion and long run time for your replacement need Item Type: Brushed Motor Material: Iron, Copper Product Length: Approx. 50 mm / 2.0 in Product Diameter: Approx. 36 mm / 1.4in Product Shaft Length: Approx. 12mm / 0.5in Product Shaft Diameter: Approx. 3.175mm/0.1in Compatible with: for HSP for HPI for Axial 1/10 Scale RC Car 1 x Brushed Motor 1 x User Manual 2 x Accessories