yes he use a pen and not his own machine ... running similar to my axys , comparet to a thunder its have a little bit less punch i think. For the price :x ..its a direct drive and they are a lot machines like wayne taylor or Kubin thats build similar and very good machines. The sinner is from all i have try one of the best rotarys out. Its have a very coil like hit ,adjustable, robust (push cheyenne carts on 4v) and its easy to use with rubber setup. The weight is not to much and not to less. For my immo the best for carts.