The Multi Cinch Book Binding Machine makes book binding quick, easy and affordable. It is the best binding tool on the market for home, school and office projects. Use the square cartridge to make adorable square-shaped holes for custom planners, journals, diaries, books, and other fun projects! It easily punches through paper, cardstock, and chipboard for a 2:1 decorative book binding option. This package includes one Square Punch.