Thank you for viewing. I used this a few times after purchasing it, but I'm selling it because I no longer use it. It can be used as a guide to see if your pedaling is smooth, and it reduces the stress on your body and bike when using a roller. There are no issues with the operation, but it is a used item, so please purchase only if you understand this. - Brand: Tacx - Model Name: NEO Motion Plates - Accessories: Box - Color: Black/Blue - Material: Plastic - Design Features: Non-slip pattern