The Akiles Diamond-1 corner rounder is one of the strongest and most efficient manual corner rounding machines in its class. It can be used to cut through up to 0.4" of material and includes a 1/4" cutting die. It includes a convenient L guide for proper paper alignment and includes plastic pads that the die rests in after making a cut. This can be used for cutting corners on business cards, playing cards, greeting cards and much more. It is extremely easy to use and is very durable. Other optional dies including a 1/8", 3/8", half-moon and 45 degree straight cut dies are available upon request.