1. The most effective auxiliary device for sewing machine 2. Raise 35% capacity 3. Just add the optional device promote a sewing machine to an automatic machinery 4. Easy operation, not drill any hole 5. Noiseless under high speed operation 6. Pat pending in Turkey Patent No./Country: 1. USA No. 5481994 2. Germany No. 29506358.0 3. Japan No. 3017356 4. China No. 237324 5. Korea No. 109724 6. Taiwan No. 114298