Kai it really depends on his partners liking, typically at a Hard Roughness though

Jay is a lot like Kai, other then he goes rougher then what Kai would do normally. So around a Hard-High Roughness

Cole... is as rough as rough can get. If it hurts to much, he goes back off the roughness. But yeah Crazy-Hard Roughness

For Zane, it depends on his partners liking, he can go rough, he can not. That all depends. So Free-Choice Roughness

Lloyd is kinda like a Zane and Jay combination, he let's his partner decide, but he typically wants to keep it rough at least a little. Kinda-Free Roughness