Specification: Material: Steel Color: Gray Weight capacity for each one: 1500 lbs Overall Size of Each One: 16 1/4" x 11 7/8" x 4 1/2"(L x W x H) Size of plate: 16" x 12"(L x W) Diameter of caster: 3" Weight for each: 13.7 lbs Package include: 4 x Car wheel dollies This 4 pieces tire wheel dolly is great for moving cars boats planes and more! With 4 pieces 3" heavy duty vehicle universal wheel(2 with locks) for easy operation. They are Truly heavy duty rated at 1 500 lbs. capacity each (6 000 lbs. total capacity for the set of 4) and they're made from solid diamond plate steel with a tough protective gray powder coated finish. These deluxe bearing axles will let you roll with much less force than is required with traditional dollies. This set will help your lot for your repairing work Do not hesitate to buy one! Designed for easy one-person movement Suitable for workshop tool collection and garage use Super strong quality well built solid construction Heavy duty steel construction Convenient carry handle for easy transport Powder coating finish in the surface resistant scratching Deluxe diamond tread pattern reduces slipping