Libra Set of 4 Heavy Duty Tire Wheel Dolly Vechicle Moving Dolly -27018 4 Piece Vehicle Tire Wheel Dollies for Auto Moving Repairing Heavy duty durable constructed steel plate with anti-slip diamond tread Each dolly hold up to 1,500lbs, 3" ball bearing caster wheel, swirl 360 degree, Each dolly has 2 locking caster wheels Powder coated for rust resistant, Plate dimension: 15-3/4"x12", height: 4"