You never need to break down your setup to change the hit. Keep’er bagged. You simply twist the stroke ring in the center of the machine, on the fly, and you’re hitting exactly the way you want!Pen machines have a lot of benefits and reducing fatigue is one of them. The Valhalla also reduces vibration, so much so that even if you’re used to the Fehu, you’ll be able to feel the extra energy left over at the end of the day. Your body will thank you from your hands to your back.There’s no mechanical gadgetry or spring-loaded gimmicks in the Valhalla, it’s pure high tolerance and good geometry. If you want to make your life a lot easier and more productive, this is the perfect place to start.