5X Eachine 3-Blade Propeller Prop 20Pcs for 7mm 8.5x20mm Coreless Motor DIY Micro FPV Quadcopter
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These tri blades are very cool looking, but unfortunately that's all you are going to get from them. I purchased these for my Hubsan micro quads and they drastically reduced flight time and overall performance. Stick with the 2 blades.
I got these to experiment with options for an unmodified QX95. These props stay on nicely - no need for glue, they are a nice tight fit. They can't be pushed down all the way with some prop savers as the blades touch, but the props actually stay on even if not pushed down all the way. They are a lot quieter than stock QX95 blades and great for quiet flying indoors. QX95 motors run hot and flight time is noticeably less, and the quad is noticeably less responsive to throttle. Flying up to go over obstacles requires thinking ahead. One blade measures ~23mm from the hub, so I'd call these 46mm blades.