DRITZ-Fons & Porter Binding Tool. Use this acrylic tool to achieve smooth finishings for binding ends every time! Features: diagonal sewing line; trim guides at 1-3/4in; 2in; 2-1/4in and 2-1/2in. Constructed of clear acrylic with black markings. Tool measures: 3-3/4x3-3/4x1/8in. Imported.