MLTOOLS Leather Hole Punch Pliers 68331 For punching round holes in leather, plastic, rubber, canvas, cardboard and similar materials &lt;&gt; Professional Leather Punch: Head revolves for quick size adjustment &lt;&gt; Turning the dial to select the hole size. &lt;&gt; 6 sizes: 2mm, 2.5mm, 3mm, 3.5mm, 4mm and 4.5mm &lt;&gt; Lifetime warranty