They're these:
http://www.hobbyking.com/hobbyking/s...dProduct=12921
Nothing special about them, TBH, but they do provide good power.
My sunnysky 980kv arrived today so I'm in the middle of fitting those. As I don't seem to suffer from excessive vibration (due to a bit of flex in the arms?) I'll be interested to see what difference they make - as I said last night changing the esc's from std turnigy ones to the afro's has made it easier to fly, but much less aggressive so I might look into 4cell and 8" props. Or build another more aggressive quad/tri with all my spares!