Janome
Janome Air Thread AT2000D Serger: Simply Insert the Thread Into the Air Ports — Push Air Threading Lever and Faster Than You Can Blink Your Eyes your Loopers Threaded.
Singer
SINGER Making The Cut 4 Thread, Differential Feed, 1300 Stitches Per Min-Sewing Made Easy Serger, Blue, S0230
Janome
Janome Pro4DX Heavy-Duty Overlock Serger, with Easy Threading Lower Looper, Differential Feed, 2 needle, 2/3/4 Thread Overlock Stitching. Metal Thread Mast
JUKI
Juki MO-1000 Serger, Push Button Jet Air Looper Threader,purple