This is Ertl John Deere Animal Hauling Set. The Set is mostly made with Plastic but does have some metal parts and rubber tires. Set is about 1/24 to 1/27 Scale and includes the following:
Yellow Pick Up Truck with Hitch (Pickup Truck is 8 1/8 inches long)
Black Animal Trailer which is about 6 inches long. Trailer Doors Open
2 Static Cows
Bonus Tractor
ADULT COLLECTIBLE MODEL - Not intended for children under 14.