This is a genuine replacement drum roller for a dryer. This part includes a roller which has an axle and two tri-rings. The dryer drum roller holds the drum in place while it rotates on the dryer support wheels. If rollers are worn out, the dryer will be noisy. This is a genuine OEM replacement part. If your dryer has more than one drum support roller, it is recommended to replace both at the same time to ensure proper rotation. They often wear at the same rate. You will need to remove the outer front panel to access this part. This replacement part is sold separately.