erging Simplified. Every project is easier with the right tools for the job, and the AirThread 2000D provides all the tools you need to deliver professional quality finishing. With Janome’s One-Push Air threading system, the tedious threading of upper and lower loopers is a thing of the past. The 8-piece feed dog system will easily grab and feed your fabric, from slinky knits to denim. The built-in one-step converter makes changing from 3-thread to 2-thread applications easier than ever. With a built-in needle threader, manually threading your serger needles becomes easier than ever.