The Vintage Box Ammco Model 2100 Ridge Reamer Tool is a specialized hand tool used in automotive maintenance and repair. Made by AMMCO, this reamer tool is designed to range from 2 9/16" to 5" sizes. It is a high-quality tool suitable for professionals and automotive enthusiasts looking to drill precise and accurately sized holes. With a durable construction and a lack of a warranty, this USA-made tool is a reliable option for a variety of automotive applications.