RM-500 Portable Blindstitch Sewing Machine Desk model blind stitch Machine is a special sewing machine that forms a single thread chain stitch with a single curved needle. The single-thread chain stitch hides itself so you cannot see it from the outside, making the clothes look more neat, elegant, and professionally made. Specifications: Speed: Up to 1200 Stitches per Minute Stitch Length: 3-8mm Needle: LWx6T Presser Foot Height: 7mm Motor: 110 Volts package dimension: 395x355x330mm/15.5"x13.9"x12.9" Weight: 14.5kg/31.9lbs Up to 1200 Stitches per Minute Speed 110 volts Power Swing-down Cylinder Arm Swing-Away Work Table Skip Stitch Lever Knee Lifter Lever 3 to 8mm Stitch Length Adjustment 7mm Presser Foot Lift Portable Blind Stitch Hemmer Machine Portable Home Use Sewing Machines for Apparel Tailoring and Alterations only, not the model we recommend for exclusive drapery sewing.