The Mayhew Tools 23001 Prick Punch, 3/16" - 5mm x 4-1/2" is used to scribe lines in metal before cutting or riveting. Sharper angle specifically designed to scribe lines in metal. Made in the USA. OAL: 4-1/2-Inch, body size: 5/16-Inch, body type: Hex, blade width: 3/16-Inch and weight: 0.1-pound. 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.