This is a pretty good desktop buffing/sanding kit. Thanks to the many accessories supplied, this small machine is very versatile. With six interchangeable attachments, it can be set up in various configurations:*) 2 conical threaded spindles for quickly inserting and removing polishing wheels*) 2 mandrels for clamping grinding wheels*) Flexible shaft with premium quick-change button with 3-jaw chuck with key for securely holding Bits up to 3/16" diameter*) Separate 3-jaw chuck with key. You can find similar quality small benchtop grinders/polishers for a lower price, but they come with lower quality and usually fewer accessories. This unit is well built, has a good variable speed performance and comes with all the accessories you need to get started - it's a smart solution for a small workshop.