Features: Protect the propeller to prevent the blade from hurting people or being damaged by foreign objects, improving flight safety. Snap-on designed for easy installation and removal. Using high-toughness materials, it has strong impact resistance and compression resistance, reducing accidental damage to the machine. Strengthened structure and the anti-collision protections is further upgraded. Lightweight designing, which does not affect the normal flight of the drones. Specifications: Material: ABS Applicable Models: for EVO II/EVO II Pro Drones Color: Black Net Weight: 0.21lb.(97g) Size: Approx. 22.8x18x4cm/8.97x7.08x1.57in Package Includes: 4Pcs Protective Rings note: Please allow 0-1cm error due to manual measurement, make sure you do not mind before you order. Please allow for slight color differences due to different monitor resolutions.