With 21 Stitch patterns including 3 and 4 thread capabilities, 2 thread stitches for lightweight finish, Chain stitch and Cover stitch of 6mm x 3mm, Electronic speed control that can handle different types of fabrics and an easy to follow colour threading system. Huskylock S21 is the perfect companion for your sewing machine. Speed, accuracy and additional useful features at an affordable price. The Husqvarna Viking Huskylock s21 is innovative at every turn from the inside, and out. It provides innovations focused on ease of use and professional results. Most importantly, it will inspire you to fall in love with the power and capability of a Husqvarna Viking overlock machine. Just imagine all the possibilities for new creations. Your ideal sewing companion awaits.