Props Dia: 63.76mm Center
Center Hole Dia: 1.5mm/2mm
I didn't like the way the 2 blades that come with the Mosquito XL BLv3 make it fly so I picked up a few of these because of the review that said they are a good match. Haven't flown then yet, but there Gemfans and you can't go wrong with that. So these will go well with the right craft. Genfans are the best right now.
these are not as good as the quad blades, but they will be much easier on your battery life on a flight