Lost Frost plugs

grassy said
We tried to get in to measure with a caliper and the best we could do is 1.48 ish..

Since you cannot hit directly, how do you make sure it goes in straight ?

1 5/8 for the sides.

Aha, that is the challenge.

I've been using an 18" extension that's slightly bent, right behind the male end.

Be prepared for cussing, and possibly drinking.