Uh...wow. The UR3 John Holmes Realistic dildo is certainly the biggest penis in our warehouse.
Yes, you would figure that a man that starred in over 2,500 adult films would have a pretty big ding-a-ling, but come on! Poured from the single mold of Holmes' penis in existence, the dildo is not only massive, it is amazingly lifelike in feel due to its UR3 coating.
Prepare for 10" of insertable length and 7.5" of average girth. We keep one of these in our conference room and slam it on the table when we need to emphasize a point - you can probably find something more useful to do with it...but make sure to have some lube handy.