When you want to make the most of your serging time, with professional results, the MyLock 634D is unmatched. It has 2 needles and 2, 3 or 4 thread overlock stitching. Threading is a breeze due to color-coded thread guides and a self-threading lower looper.
The MyLock 634D also lets you quickly switch to rolled hemming without changing the needle plate.

 Features:

2, 3, or 4 thread overlock
Lay-in thread tension dial
Seam width: 1 - 5mm seam length3.3mm (narrow), 7.5mm (wide) 2.0mm Rolled hem
Slim foot
Handy needle threader
Convenient thread cutter
Easy rolled hem change-over
0.5 - 2.2 differential feed ratio
Easy upper knife release
Adjustable cutting width: 3.1 - 5.1mm
Easy lower looper threading
Differential feed
Lower looper pre-tension setting slider
Changeable thread guide
Front and back needle guard
Retractable upper knife
Numbered tension dials
Color-coded thread guides
Snap-on presser feet

 Specifications:

Serger Flat Bed
Skeleton Body Construction
Lay-in Tension Dial
2, 3, and 4 Thread Convertible
Maximum Speed: 1,300 spm
Incorporated Tension Release Device
Incorporated EZ Change Rolled Hem
Adjustable Foot Pressure (Adjusting Screw)
Snap-on Presser Foot
Feed Adjustment: Dial on Belt Cover (with Window)
Differential Feed Adjustment: Dial on Belt Cover (with Window)
Dial Cutting Width Adjustment
Alined Spool Pin Spool Stand
Carrying Handle: Part of Machine Body
Thread Cutter
Length of Feet: 1 to 5 mm
Differential Feed Ratio: 0.5 to 2.25
Cutting Width: 3.1 - 7.3mm
Waste chip Box
Accessory Box
Foot Controller