The Janome FA4 Free Arm Serger with electronic foot control is an advanced overlocker with 2 needles and 2, 3 or 4 thread overlock stitching. The Janome FA4 Free Arm Serger has differential feed ratio, which is adjustable from 0.5 to 2.25 provides exceptional control for handling all types of fabrics and for creating desired special effects. Threading is a breeze with color-coded thread guides and a self-threading lower looper. Simply lay the thread into the guide, flip a switch, and the lower looper is threaded. The Janome FA4 Free Arm Serger has a guide that is automatically returned to its normal position when you turn the balance wheel. The thread tension automatically release when you lift the presser foot so you can draw through the threads smoothly. The Janome FA4 Free Arm Serger also lets you quickly switch to rolled hemming without changing the needle plate. A lower looper pre-tension stitch eliminates the need to change tension for rolled hems. KEY FEATURES of the Janome FA4 Free Arm Serger Overlocker with free arm Easy threading lower looper Weight 17.6 lb 2, 3 and 4 thread convertible Lay-in thread tension dial Easy to read threading chart Adjustable cutting width from 3.1 ? 7.3 mm Differential feed ratio from 0.5 to 2.25 Quick change rolled hem Changeable thread guide Retractable upper knife Snap-on presser feet Color coded thread guides Adjustable foot pressure Speeds up to 1,300 SPM Lay In Tension System Included Accessories with the Janome FA4 Free Arm Serger Standard Accessories Screwdriver (Large) Screwdriver (Small) Tweezers Set of needles No.11, No.14 Nets Spool holder caps Lint brush Needle threader Oil Spreader Spanner Upper knife Attachment mounting plate Foot Control Instruction Manual