Hi Michael, Thanks for the kind comments. Yes they are drilled all the way through. The only downside to that so far is that things fall into the drawer on the left where the holes are located behind the vise. A couple of shorter benchdogs is on my wish list, but so far I have been able to work around any issues. There is no issue with any of the other holes as they are at the front of the bench and the front is 6 inches deep. The holdfast is by Veritas and I bought the shorter leg so it does not impact the drawers either. Let me know if you need further information. I am away from home, but can get specific when I get back.