Bernina L450 234 Overlock Serger, MTC Micro Thread Control, Roll Hem, Diff Feed, Tension Release w/Presser Foot Lift Lever, 3-9MM Wide, 1200SPM, 2LEDs

Patented Micro Thread Control (mtc). Easy to Use - a one-step adjustment fine tunes looper stitches to fit the cut edge, Reduces test sewouts looking for the perfect stitch, Creates professional seams and perfectly finished edges,