Husqvarna Viking Amber Air S 400 OverlockerWith the Husqvarna Viking Amber Air S 400 overlocker your threading nightmares are a memory of the past. Thread your loopers with a push of a button and a blast of air. Although the air threading is the star of the show there's also a whole host of features and stitches to give your projects that professional touch. Features and Benefits Air threading loopers with the one touch air threading threading your overlock machine loopers is a breeze. Built