Description Overview For heavy materials Model: 508 Specifications Max sewing speed: 2000 rpm Max stitch length: 10 mm (normal/reverse) Needle bar stroke: 38 mm Foot lift: by hand 9 mm, by knee 16 mm Alternating vertical movement: 2.5 mm to 6.5 mm Hook: vertical-axis double capacity hook Needle: standard 190r or 135x17 (125 nm to 200 nm) Oil wick lubrication Size of binder: 45 mm, 50 mm, 55 mm, 60 mm, etc. Condition and Features Auto presser foot lift is optional