This heavy duty hand held corner rounding tool with 5mm radius weighs under 14 ounces & cuts up to approx 5/64" thick (75 mils) paper, PVC cards or laminated paper material. 5mm radius is approximately 7/32 of an inch. Has large steel cutting blade and extra wide side guides to make seating your sheet simple and efficient. This radius is common on the corners of many playing cards. This tool is built to last a long time.