From the Babylock website:The Evolve is a combination 8-thread overlocker/coverstitch machine that offers an amazing 66 stitch options. Combine overlock, coverstitch and chain stitches to form expressive 5,6,7 and 8 thread stitches.The Evolve has all the patented features you would expect on a Baby Lock including JetAir™ Threading, Automatic Thread Delivery (ATD) System, tubular loopers, automatic cover stitch chain off and much more. There's no need to worry about keeping track of eight threads - the Evolve can be threaded in any order – in fact, the Evolve can be easily threaded in under one minute!Converting the Evolve from Overlocking to coverstitch and back is just 4 easy steps.Evolve features:JetAir™ Threading for loopersAutomatic Thread Delivery (ATD) System – no tensionsTrue 2 to 1 ratio differential feedAutomatic rolled hem stitchIncludes cover, accessory packet, foot controller and manual. Will ship in original packaging for $30 anywhere in the lower 48 United States, or pickup in Independence, Missouri.