OCR 38PCS 4mm Auto Punching Tool Steel Metal Number Capital Letter Stamp Set with Automatic Punch Alphabet ID Stamping Punch Set Kit

The OCR 38PCS 4mm Auto Punching Tool Steel Metal Number Capital Letter Stamp Set with Automatic Punch Alphabet ID Stamping Punch Set Kit is advertised as a versatile tool for marking metal, leather, and paper. However, customer reviews suggest that this tool is only effective on leather and paper. InConsistent quality control has led to missing letters and duplicate letters in some kits, which is an issue that has affected multiple users. Some customers have also reported that the automatic striker does not have enough force to mark anything but mild sheet metal. The tool has proven to be ineffective for marking harder metals. However, some customers have had success using the tool to create serial number identification plates for motorcycle trailers and hidden identification numbers on the trailer frame, as well as for marking woodworking projects. It is recommended that users put some kind of marking on the punch to verify the orientation of the letter/number before use. Overall, this tool may be useful for softer materials, but customers seeking to mark harder metals should Consider other options.