Motorcycle Stand - Clean chain

Hello, I designed this easel to facilitate the cleaning and lubrication of my motorcycle chain. It is assembled using threaded bars, nuts, washers and printed parts. For me, I just printed side wall A and haven't tested the other models.

You will need:

1 meter of threaded bar M8 (8mm) - 5/16 "(inch) bars and their respective nuts can also be used.
4 M8 nuts
12 M8 washers
4 Self-locking nuts M8
4 Bearing 608zz

3D parts:
2 Sidewall A, B or C
2 Rolls
4 Plastic washer

How to assemble:

The plastic washer is for increasing the spacing between the bearing and the metal washer.
The first step is to insert the bearings into the rollers.
Then cut the threaded bar into 4 pieces of 23cm (centimeters) and finish the ends to avoid locking the nuts.
Then take a side wall already printed and place two pieces of the threaded bar already cut. After the side wall, place a metal washer and a self-locking nut.
Inside the side wall, place a metal washer, a nut, another metal washer