Click the image, which will take you to Massdrop.com. Then, enter PRACTICE in the search box on the Massdrop home page.
ProLok gives us this simple but reliable jiggler key to pick open almost any gas cap with disc tumblers. It also works very well with a wide variety of other disk or wafer lock cylinders.
Simply insert into keyway and rock or jiggle very slightly as you apply turning tension. Sometimes this key works just like the correct key . . . stick it in and turn it.