Click the image, which will take you to Massdrop.com. Then, enter PRACTICE in the search box on the Massdrop home page.
Do Not Duplicate Key Stamp
This is a locksmith shop staple - a 'must have' if there ever was one. This metal stamp clearly marks the bow of any key (except steel keys) with a clear indication that locksmiths and other key copying personnel should not duplicate the key unless previous arrangements were made.