14u554/555/557/854/857 is  multi-function sewing machine,which adopts the latest international design.and they have the beatutiful outlook and dura-bitity of performance.meanwhile,they enjoys the replaceable cloth plate,which sews the cylinder fabric conveniently. the threading and stitch length can be adjusted esily. differental feed is applied to overlock fabrics.it can do overlock fabrics. it can do severl stitch stypes,such as overlocking,overedging. it is suitable for light middle and heavy fabrics.                                         my msn and email is wsq820121 at hotmail.com