specialty： 1、with unison feed owns good feeding characteristics even on materials with rough, slippery or tacky surfaces accurate and uniform stitch. 2、Diagram of cylinder bed is 46mm which enables easy and unhindered movement of bulky of tubular workpiece. 3、Binder feeding together with unison feed. 4、Clearly arranged thread guides. 5、Practically noiseless running because bevel gear are enclosed in grease-packed cases.