Designed for applications with very tight requirements on the testing area.
May also be utilized if you have already been using a PATTI system/piston to test one coating and find that you now need to test a significantly weaker coating. By increasing the diameter of the pull-stub you are using, you effectively reduce the range of strengths a given piston can test. In this way, you will not need to purchase another piston for your new application
Please note that you will need a Stand-Off Ring and Threaded Stud (sold separately) to use these stubs.