Product Catalog Model 350, 3-1/2" Round Button Machine > Model 350 Photo, 3-1/2" Round Photo Button Machine > Model MTD 350, 3-1/2" Round Mounted Manual System > NEW Model 2535RC, 2-1/2" x 3-1/2" Rounded Corner Rectangle Button Machine > Model 2535, 2-1/2" x 3-1/2" Rectangle Button Machine >