For those looking to remove the seat belt anchor bolts, they are a T-50; the only T-50 I found that would not break when mounted on a hand driven ratchet is a Durlast Impact Rated “bit”. I used this and a 4 foot “cheater bar” after soaking in PB Blaster (sprayed both from bottom and top) for 7 days.

I broke 5 other brands before this one or twisted them.