I am satisfied with the purchase, I drill holes in the circuit boards, sharpen, saw small parts, polish watch cases, telephones, my wife saws heels. Very good for home. Dremel of this configuration (Flexible shaft, nozzles, case) will cost from 4000, 135a cost 3 times cheaper. Summary: A machine for those who are strangled by a toad to give 4k for a Dremel =) If you are not experienced and do not know exactly why you need an engraver and what you want to get from it, then this model is for you.