Rolling pin and mat set for even dough thickness

I was looking for a tool to help me roll out cookie dough to an even thickness, and found this item that seemed convenient, so I purchased it. It's a set of a stainless steel rolling pin and a silicone mat.
I bought it when I was into making cookies, but since it was shipped from China, my enthusiasm for cookie making had cooled down by the time it arrived...
Since I don't think I'll be using it again anytime soon, I'm offering it to someone who needs it.

The white screw parts on both sides can be turned to remove the rings, and then you can attach the desired thickness ring and reattach the white parts. The white parts are made of plastic, and the screws turned relatively smoothly.
There are 4 types of rings: 2mm, 3mm, 6mm, and 10mm.
The color didn't come out well on camera, but they are colorful as shown in the size image.
*Please note that the ring colors in the size image are different, so please use them as a reference only.

I think it's convenient because you can roll the dough to your desired thickness just by rolling the pin, without needing to place other tools on either side. Also, the rolling pin itself has diameter markings (though it's over 100cm), so if you align the center, you might be able to make pizzas to your desired size as well.

*Please check my profile before purchasing.
I ask that those who understand that this is a home-stored item, that it has been inspected by an amateur, is a used item, and is an overseas product, please consider purchasing it.

- Size: 44cm x 6.5cm
- Mat size: 60cm x 40cm
- Material: Silicone mat
- Use: For confectionery and bread making
- Color: Stainless steel and colorful rings

Thank you for looking.