This is the Revolver chrome rock crawler wheels wide wheelbase from RPM Products.
Features:
Includes: Two 10-hole wide wheelbase chrome wheels and one RPM decal
Requires: Installation on tires and tire glue
Specs:
Diameter: 2.44" (62mm)
Width: 1.61" (41mm)
Backspacing: .28" (7.1mm)
Wheel Hex: .47" (12mm)
Min. Axle Length: .42" (10.5mm) from the hex face to the end of the axle
Max. Axle Diameter: .196" (5mm)