This interchangeable Metal Miter die set only has a relieved .090" thick punch for miter corner shapes in most vinyl and carpet cap metals with at least at 3/32" opening. It can be used on any Metal Miter handle (No. 845) to punch out the 90° notches necessary to form a corner. Adapts to the handles from the following combos: Nos. 847, 849, 851, 870. For use on aluminum cap metal only.