This katana does what it says on the tin, but it's actually way overpriced for your drone! I bought it for $15, I don't think it's worth $10! If I paid the $50 the polar pro asked a year ago I would send it back and wait for something else or maybe buy a 3D printer and print it myself! I'm not saying it's a bad product, it's just that you're paying mainly for a brand name like bottled water, you can get the same water with two different labels, one costs ten times as much, I know I worked for a company have the water bottled. Is the purchase worth it in the end? yes if available