Service Caster Series #100 Heavy Duty Dual Wheel Swivel Caster with Black Poly Wheels and Swivel Lock.
Wheel size: 12" x 5"
Capacity: 15,000 lbs
Top plate size: 8-1/2" x 8-1/2"
Bolt hole dimensions: 7" x 7"
Bolt size: 5/8" (hardware not included)
Mounting Height: 15-1/2"
Wheels rotate on tapered bearing (Use for manual speeds; 3 mph.)
Wheel tread hardness: 70 Shore (D) Durometer