Socket wrench for toilet oval water shutoff valve

[katy]

Imagine a 1/8" steel plate with an array of holes drilled through it. The back side of this plate has a chunk of 3/8" hex steel welded in the middle.

In use bolts would be passed through the holes in a pattern that trapped the OSH. The bolts would be secured in place with nuts. Then a socket wrench would be used on the 3/8" hex steel to torque the OSH.

If'n one used 3/16" or 1/4" plate and threaded the holes, nuts wouldn't be needed.