As a jeweler I have loved my Dremel cordless stylus for over 10 years when it died. Replaced with this VonHaus model as I liked the brand, price and flexible shaft tool. The collections don't fit and it takes so long to replace them. Especially compared to a very small cordless model like my old Dremel stylus. Pros: The performance is amazing compared to my old decrepit Dremel. You can do what you need within the specifications of the product. Relatively calm. Doesn't wobble when sawing. Lots of accessories. The Bad: Heavy vehicle users can find switching builds AND attachments an annoying waste of time. Note: I am contacting the seller to make sure I didn't do anything wrong.