The only thing is the youtube video on repair isn’t thorough enough, not for the first time, tech, i’m, a tech, so it wasn’t t difficult the only blades i will ever install on my parrot and offi. You get what you pay for. I ordered a set of off brand propellers in these propellers visually. I can’t tell the difference. The main problem between the two were that the off brand screw holes were snug around the mounting screws, as opposed to these that were free floating. I don’t know if this would affect the flying or not, but the enough he is 600 to 800, and i really didn’t want to guess at it. Yes, the off brand is two sets for propellers for ten dollars and the real and offi ones are twenty dollars for, for one set. What can i say extra note? These do come with screws. The off branded in Music fly good with battery zoom zoom. I go far 20 minutes go far, go far, the battery works perfectly and is a must have spare for your an offi. I have three total batteries and the flight times are incredible. Music. This package comes with the propellers wrench and screws for mounting replacement, props on and off e motors. I’Ve noticed no change in the sound or performance of these propellers. The battery works like a champ, no issue with it at all. I only put four stars because of the cost come on parrot give us a little break here.

Usanafi owners are very loyal. Please cut us a break on the costs of the battery. All the parts for a minor crash, one of the landing feet broke after falling from a table drone wasn’t even on damn cat lol, good idea to have around just in case a bit pricey in my opinion, but no choice.