This coreless motor and propeller which is made of metal. It contains 4 motors and 4 propellers.A propeller is a type of fan that transmits power by converting rotational motion into thrust. A pressure difference is produced between the forward and rear surfaces of the airfoil-shaped blades, and a fluid (such as air or water) is accelerated by the pressure difference.
Battery type: 3.7 v(dc) Not included
Safety warning: observe the clock wise and anti clock wise motor and fix the propeller
Package contents: 4 motors and 4 propellers