The Mayhew 11 pc. Metric Pin Punch Kit is used for driving out already loosened pins and keys. The pin punch kit includes many lengths and sizes to fit any application. The metric pin punch kit comes with an unlimited lifetime warranty. The black oxide finish on the pin punch kit offers resistance to corrosion for long-lasting use. Mayhew stands for quality, dependability, and confidence. When the caliber of the tools is just as important as the skills of the professionals employed, businesses trust Mayhew to get the job done. Since 1856, our punches, chisels, and pry bars have been the go-to tools for OEMs and professional mechanics throughout the country. And while our company has grown to meet the needs of the professional market, as well as those of the do-it-yourself automotive enthusiast, our focus has never changed - leveraging our strength to build your business.