Ideal companion to your Britannia instyle sewing machine. Features: Up to 1300 stitches a minute Easy threading lower looper Built in rolled hem Auto tension release. Auto looper threader Free-arm Adjustable presser foot pressure Differential feed Stitch length up to 4mm Stitch width up to 7mm 3 & 4 thread overlocker with built in rolled hem, free arm, differential feed, easy looper threader & thread catcher box.