Specification Model: SM-2972 Material: Cast Iron Surface Treatment: Plastic Spraying Single Needle: DP*17 16# Lubricating Oil: 10# White Oil Stitch Method: Straight Line Needle Plate Type: Double-headed Operation Mode: Manual; Electric(Require Table Plate Frame and Motor, Not Included) Max. Sewing Speed: 500 stitches/min Sewing Table Diameter: ＜ 30mm/ 1.81in Stitch Length: 5-15 stitches/inch (5.1mm - 1.7mm) Sewing Foot Stroke: 6.4-9.5mm Arm Length: 30cm/ 11.81inch Net Weight: 28kg/ 61.73 lbs Gross Weight: 29.55kg/ 65.15 lbs Product Size: 55*21*43.5cm/ 21.65*8.27*17.13inch Packing Size: 58*29*49cm/ 22.83*11.42*19.29inch.