The base of the stand is on 4 relatively thin 30 mm rectangular tubes. These are pushed onto a plastic cross and fastened with a screw top. The 2-piece tube is simply plugged together and inserted into the plastic bracket on the foot. Then gradually with corresponding recesses to put steel pins through pre-drilled holes in the vertical pipe to hang the plastic holder for the tires. The assembly is so simple - but the stability is not reassuring. I use the stand only for a 185er and 205er tires with 15/16 inches. But for 245 tires with 19-inch, he seemed already close to its breaking point - here he staggered not only, but cracks questionable after lightly touching In the field of plastic foot. The square tubes are each piece almost 25 cm long - in my experience too little for large and heavy wheels with tires. When installing you should pay attention to a flat bottom and choose a place where you do not often come into contact with the stator.