This plate makes it easy to mount both the Eastwood Shrinker and Stretcher in a secure location to work It enables you to switch between the Shrinker and Stretcher without having to mount or unmount while working. This plate saves time and money while forming sheet metal. The Eastwood Shrinker Stretcher Base Plate comes with all mounting hardware needed for setup, so that you can get to metal forming right away. Contents One base plate with (4) 3/8 16 bolts and (4) 3/8 washers