In Stock On Amazon
I’m reading mixed reviews of these (at least on the Mavic Pro) with people saying they make the Mavic Pro slower and/or don’t generate as much power. The other issue people have been posting is the new props can introduce some additional gimbal vibration.
I haven’t tried these personally though.
Also they are probably cheaper of heliguy as only £10 there (plus postage which should only be a couple of £)