For SYMA Propeller For X11 Aircraft Qudcopter Drone Feature: 100% brand new and high quality. Easy to install, durable and lightweight, a must for beginners and junior users. To avoid bad landing such as scratching a car, cutting a child, dropping like a stone. When hit wall, tree or whatever, as long as the propellers rotate, your device will always keep balanced. It will stay in air instead of dropping down. With these prop protectors, your device will never drop like stone again, thus your device will last longer. Easy mount, Quick release Fit for X11 Quadcopter Specifications: Material: Plastic Color: Black, Quantity: 4 pcs Package included: 4 Pcs x Propeller