Heckuva lot more plastic options alot cheaper that work fine for the majority of us.
I just use the Camco plastic lego squares. Work just fine and can get 10 for the half the price of one of your Ox Blox.
To each there own I suppose. i haven't had any issues with my cheapo camco blocks for oh, I don't know, nearly 10 years.
Mike
Im Mike Willoughby, and I approve this message.
2017 Ram 3500 CTD (aka FRAM)
2019 GrandDesign Reflection 367BHS