M series Dot-Peen with Heavy Duty Pin – Questions AnsweredPublished by Marc Steele on March 6, 2020March 6, 2020 Categories: Dot-PeenDot-Peen ExamplesM Series Tags: 2D CodeHeavy Duty pinM-Seriesvideo Marc Steele Marc has been in the marking business for over 15 years. He provides technical assistance through emails and online chat.