Given the task definition and input, reply with output. In this task, You are given a review of Amazon's food products. Your task is to divide them into two classes: negative or positive, depending on the content of the review.

These wheels are very easy to install, just snap them in. They help the chair move much smooth and quieter. They slide quiet and super smooth on the hardwood floor. I didn't know there were these kind of wheels until recent search and purchase. The price are low too. I will replace all my office chair with these type of wheels in the future. Highly recommend.
positive