Review on ✈️ Enhance Your DJI Phantom Flight Performance with MAS Upgrade Propellers - Black 4 pcs + Built-in Nut Included by Melissa Dufour

Junk. not happy at all. Use them once for each drone. upset the balance and nearly crashed my DJI Phantom 3 Standard. When I flew my Phantom 3 4K. lost his balance and couldn't regain control of the drone, and it crashed. landed in the grass but still injured his body and broke his arm. I'm not very happy and damage to my drone cost over $200 plus shipping. I emailed the company before posting this review to see if they would pay for the repairs and received no response. We use these drones for search and rescue and now I've lost the drone due to broken rotor blades. I have a community radio station in town and we do shows about drones and the tools we use. I will make sure we bring up this company and their lack of concern for over $200 to repair a drone they are responsible for. Also folks when he had a short flight it sounded like the flight of a bee.