Features: brand new and high quality Avoid damage caused by foreign objects hitting the blades, improving flight safety. Durable ABS material made, exqusite workmanship, high strength and good toughness, comfortable hand feel and wear-resitant. Separate the propeller from the outside to protect the blades from being scratched and broken. Lightweight and compact in size, weighs only 26.7g, adds no burden to your flight. Snap-in design, easy to install and disassemble, portable to carry and store. Specifications: Material:ABS Color:Grey Weight:26.7g Applicable Model: For Mini 3 Pro Radius: Approx. 8.5cm/3.34 inches Dimensions after installation: Approx. 40x32.8x4.6 for cm/15.74x12.9x1.for 81 inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Anti-Collision Rings