When you receive your new All Terrain Trolley, you will see that some assembly is required.
Your base section will come in three parts, which are two sets of wheels and a center section (see picture 1)
The wheels are labled A and B
Wheels slot into your center section marked correspondingly with A and B (see picture 2 and 3)
Once you have one set of wheels in place you can clip together (see picture 3)
Repeat this operation for your other set of wheels (see picture 4 and 5)
Once you have both sets of wheels in place (see picture 6 and 7)
You can then put the cage section of your trolley to the base (see picture 8)
Once your cage is located to the base you can secure with the 4 clips on your trolley (see picture 9).