WHERE TO BUY LEAFLET Thread catcher Device for holding cut needle threads. High speed The speed of the W4 is 5,500 rpm, compared to the 3,700 rpm of a normal machine with cover, the efficiency increases more than 50%. Integrated control box and motor Quick and easy installation, clean and safe design. Wide Adaptability Ability to sew on heavy, medium, light and mesh fabrics. Up to 8 layers of fabric thickness, without any adjustment, maintaining the beauty of the stitch. Standard (01) Collarect (02) Top stitching (03) Hem (08)