External corner trowel designed for forming external corners after plastering. Stainless steel blades with back mountings. Light and easy to use with comfortable DuraSoft handles. Available with square or 1/2in radius rounded corners. Size 150 x 63 x 63mm (6 x 2.1/2 x 2.1/2in). Marshalltown 68SSD Stainless Steel External Corner Trowel Rounded Is a pencil radius external corner trowel, 1/2in radius rounded corners.