
Well , the rotation tool turned out to be much better than I expected. The main tool itself looks quite premium and runs quietly without overheating. The amount of attachments was outstanding so overall great value for money. I think everyone said it ended up being about 1/4 the price of Dremel equipment. There are only two problems that it would be an excellent tool if Wen corrected it. First, the collet/shank is not properly designed or manufactured and therefore the bits are not held in place perfectly concentric with the shank. This makes really fine work impossible, as the end of the drill oscillates in a circle instead of rotating perfectly on its own axis. This does not affect the use of cutting discs, grinding discs and grinding rollers, but it makes less sense to use small grinders and drills. The second problem is that the flex shaft grip heats up very quickly. You must be using a glove and I suspect this indicates a lot of internal friction which is greatly reducing the life of the flexshaft. However, I am very happy with this purchase.