Description: Makeblock 820 Coreless Motor has both the positive pitch and the negative pitch, it is usually used in the four-axis aircraft. Fetures: • High torque • Low weight and small volume • Low energy consumption • High speed Specification: Motor diameter: 8.5 mm Motor Length: 20 mm Output shaft: 1.0 mm Output shaft length: 5 mm Pigtail cable: 5cm Weight: 6.5 g Voltage: 3 V-5V Current: 0.15 A Speed: 3V: 35000-37000 RPM 5V: about 50000 RPM Size Charts(mm): 