This heavy duty hand held corner rounding tool with 3mm radius weighs under 14 ounces & cuts up to approx 5/64" thick (75 mils) paper, PVC cards or laminated paper material. 3mm radius is approximately 1/8 of an inch. Has large steel cutting blade and extra wide side guides to make seating your sheet simple and efficient. This has become the tool of choice for many game counter clipping users. This radius is typical on the corners of most credit cards in your wallet.