MARSHALLTOWN The Premier Line 51D 5-Inch by 3-1/2-Inch Inside Corner Trowel with DuraSoft Handle N/A Imported Inside corner has an 103 degree rounded angle that will flex to 90 degree; 5/8" radius Resilient DuraSoft handle with finger guard Blade is made from flexible stainless steel Can be used for either EIFS or drywall work For use when rounded corners are desired