i say 8 inches...and i start measuring from 0, not the 1 or 2 inch mark, but please see for yourself, i have measured pics and measured vid, not easy to do alone either, lol, it can get bigger too than measured, as you can see in other comparison picsmine gets over 8x5.5, i want it a bit thicker, like my cockheadi love comparison and measured shots, how do you measure up? be proud of whatever you have, i love big ones but i always say if i ever bottom, there is no way i'm takin a big one, smaller will look real good