brand new dal cyclone 6040 tri props 2208 2350kv primos 5s , pure butter. Think a lot of guys will go nuts over these props, I think if they made a 6.45 it would be the tri prop to beat currently in the prop race! They are efficient at lower speeds but chew up amps trying to keep up with my style flying , I threw them on my epic 262 with zero pid changes and made pure butter film, I find a steeper prop pulls less amps at a lower throttle while going faster, but this will be a hugely popular prop on the market mark my words. I would recommend giving them a try!