Stop in for a cup of coffee

They are Rhino Ramps. Mine are same brand, but older style I believe. Just looked -rated at 3000 each (12000lb vehicle) Bought mine about 10 years ago because my Magnum front was too low to go up the steeper metal ones I have.

Yep, the Rhino ramps and yep rated for 12,000 pounds. Still use jack stands, anything can fail.