This is factory genuine parts not cheaper knockoffs, Can be used on other models like Amana, Whirlpool etc. This is the premium rollers because the centers are solid, not just a rolled metal edge that wears out fast. All hardware included to do the job right. After all you pulled the dryer all the way apart, you might as well use the best parts that will last the longest. This is the best price you will find as well, and delivered to your door! Thanks for delivering on a great product!