Jack W4

Jack Canada Verified independent store

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Flatbed Interlock. 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%. Ability to sew on heavy, medi um, light and mesh fabrics. Up to 8 layers of fabric thickness, without any adjustment, maintaining the beauty of the stitch. Show more