The Lisle 20500 Ring Compressor is a high-quality hand tool made in the USA. With a warranty of a lifetime, this ring compressor is designed to work on ring sizes ranging from 3-1/2" to 7". It is a durable and reliable tool that is perfect for automotive maintenance and repair. The manufacturer part number 20500 ensures that you are getting the genuine product with the necessary specifications to effectively compress rings for automotive work. New free shipping