JANOME OVERLOCKER ML454D SAILING LINEJANOME OVERLOCKER ML454D SAILING LINE MyLock 454D At a glance NEW Model Improved fabric feed Easy thread lower looper Use 4 or 3 threads Weight 6. 1Kg The MyLock 454D Sailing Line is smoother, quieter and a pleasure to use. Threading is colour coded and the threading chart is located inside the front sliding cover. Lower looper threading is made easy with Janomes easy threading mechanism. An 8 piece feed dog enables fabrics to glide under the foot,