Inspite of what the advertisements let you know, drones crash constantly. A very good drone will acquire an unplanned descent and floor interface (aka: a crash) in stride, with no damaging the body. It can even contain shields to protect the rotors and electronics from hurt. When you buy through https://www.aeroindustrial.com/product/matrice-300-parte-15-par-de-aspas-2195-grandes-alturas/