From the Owner:

Fuel Wheels! Check out our customer Asa from Cypress with his @gmc Sierra 1500 AT4 on a set of @fueloffroad wheels. These are the Fuel style Darkstar in the size 20×10 offset -18 bolt pattern 6×139.7. Note these will need a set of 14×1.5mm conical seat lug nuts to properly install. If you’re looking for a similar setup feel free to contact us direct.