Features: Extra Heavy-Duty Sewing Machine Compound Feed With Barell Hook 5.5–8.5 Mm Top Feed Lift Allows Easy Sewing Even at Cross-Seams 25 Mm Clearance Under the Lifted Sewing Feet for Easy Loading and Unloading Max. 11 Mm Stitch Length Adjustable – Forwards and Backwards Integrated Bobbin Winder Cylinder Arm Diameter 81 Mm