If you don't really know what you're doing this is great for you. In the manual it names the parts of the machinery, It tells you what the available needle cartridges are, You'll find how to make adjustments to the needle length and how to apply the needle cartridges. The pin feels of quality because it has some weight to it. I love that a lengthy usb cord and a charger block is included. I received 9 needle cartridges in total. I'm happy with what I got.