Detailed Product Description Double Needle Chain Lockstitch Sewing Machinethis model can obtain two ... wear ,beddings thin package and leather goods.The optional needle gauge has five specifications.what's more,,the model ... sewing reniforme sewing of trousers and skirts. technological card needle TV*7 9-21# thread no. 4/2 material ... of presser foot 8-10mm s.p.m 5500 needle gauge 3/16,5/16,3/8 etc. volume ...