Pin punches are used to drive out and remove already loosened pins and keys after initial movement by a solid punch. Not for use on seized pins and keys; loosen with a solid punch first. The Mayhew Tools 21401 Pro Pin Punch, 1/2 x 2-1/2 x 8-Inch is heat treated for maximum strength and features a black oxide finish to prevent rust. Founded in 1856, Mayhew Steel Products (Mayhew Tools) is the oldest punch and chisel manufacturer in the United States. As we’ve grown from a small tool house to the industry leader, there’s only one thing that hasn’t changed—our dedication to quality, reliability, and craftsmanship. That’s why we’ve become the tool of choice for certified technicians and professional mechanics across the country, and have found a home in the belts of do-it-yourselfers as well. Over time our product line has grown but our passion for manufacturing quality hand tools continues as we serve the Industrial, Automotive and Hardware industries. Mayhew is ISO 9001:2015 Certified.