ECONOSEW NARROW CYLINDER-ARM LOCKSTITCH MACHINE 155E8BVWITH UNISON FEED & WALKING FOOT Single needle, high-speed narrow cylinder arm lockstitch machine, unison-feed (needle-feed & drop-feed with alternating presser feet), standard horizontal rotary hook, reverse feed and synchronized binder. SPECIFICATIONS Maximum Sewing Speed: 2500 spm (Depends on thread, material & type of operation) Stitch Length Adjustment: 0 to 6mm Presser Foot Lift: By hand: 8mm By pedal: 13mm Needle System: 135 x 17 Needle Bar Stroke: 33.2mm (1 5 ⁄ 16 ") Feed Type: Unison feed Hook type: Standard horizontal rotary hook Cylinder Diameter: 46mm Amount of Alternating Presser Foot Lift: 2 to 5mm (3.2 standard) Working Space: 255mm Lubrication System: Manual