I haven't seen a to of cocks, about 14 first hand, but the ones i did see were mostly 7" or longer. I found all to be at least 5" in girth or higher. Half were closer to the 5.5" mark.
The two thickest cocks i saw... one was under 7" long, 6.5" actually, and he was almost 6 inches in girth... a nice plump specimen! I measured it with a tsilors tape!
The other was over 8" long, and he was at least 6" in girth, maybe more. I didn't get to measure him, but experienced it right after the other thick one i mention above. He filled my hand about the same, maybe more. A huge, gorgeous cock! He sprayed my whole body with cum like a lawn sprinkler!