The box was obviously open when it arrived. When I opened the box it looked like it was second hand. It was dirty from someone else's hands. I really liked the adjustable speed as it worked like my dremel. The problem was that the collet didn't hold the dies in place and they kept falling out. I took the unit to the local shop to verify my results and they agreed it was defective. Read the PT report June 7, 2018. I believe I received the device he sent back. I will consider another brand. Maybe spend more and buy a Bosch DG490CE.