Coreless Motor 720 with Propeller 55mm (2 Motor + 2 Propeller )

From the shop's description

Features: A coreless motor is a type of DC motor, which has a specially wound armature instead of an armature wound on an iron core. The latter is characterized by low noise, low resistance, high speed, and efficiency, lightweight, and easy to install. Despite its small size, this coreless engine is very powerful. Specifications Motor Length: 20mm Motor Diameter: 7mm Propeller Length: 55mm Shaft Diameter: 1mm Shaft length: 5.1mm Wire Connection (12cm): Red (Positive Pole), Blue (Negative Pole) Voltage: 1V to 3.7V Current: 0.01A Speed: 10,000 RPM (at 3.7V) Silver Color. Material: plastic and metal. Drawing: Package list 720 Coreless Motor x 2 Propeller 55mm x 2