Description: APPLICATION: Blade Protection Cover suitable for HS190 901HS 901S 901H Mini Quadcopter Accessories. ABS PLASTIC MATERIAL: Blades Guards are made of ABS plastic material, which is ant collision, anti pressure, light and compact, easy to carry and store. USE: Prevent the propeller from scratching people or objects, fully protect the propeller, and improve flight safety. EASY INSTALLATION: The Propellers Protection Frame is easy to install and remove with a quick release. SHOCK ABSORPTION: The semi enclosed fortress design increases toughness and effectively buffers the impact force. The support arm adopts a reinforced triangular design, shock absorption and anti shake. Specification: Material: ABS Plastic Size Chart: Propeller: 41.5X7.5mm/1.63X0.30inch Blade Protection Cover: 43X42mm/1.69X1.65inch Aperture: 0.8mm/0.03inch USB Cable Length: 60cm/23.62inch Package Includes: 8x Propeller 4x Blade Protection Cover 1x USB Charging Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!