New pen turner here. I am so confused with all the item names with different names from different venders and different levels of cost. For example the slimline with different types and costs. Is there anywhere that explains about all these for newbies? Why is a kit at $2.70 and another type is $10 or $20? What is it about them? Or do I have to buy them and find out that way? I’m sure I’m not the first to ask.