1. Separate The Propeller From The Outside To Avoid Accidental Injury And Cutting Of The Propeller; 2. At The Same Time, Avoid Foreign Objects Hitting The Propeller And Improve Flight Safety; 3. Suitable For Royal 3/ 3 Pro Crash Ring 4. Exquisite Design, Can Quickly Complete Disassembly And Assembly. 5. Isolate The Propeller From The Outside To Improve Flight Safety Colour:grey Material:PC+ABS Size:18 x 25 x 4.5cm Package Contents: 1 Set x Blade Protection Cover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.