The following property can be attributed to the pluses: if you do not use automatic rotation, then the bit is rigidly fixed in the body of the screwdriver and it can be used as a conventional, mechanical one. Some pros: A very large and varied set of nozzles. There are attachments that I didn't even know existed before purchasing this set, which is a plus. A practical and convenient stand, if you often use a screwdriver and it is constantly on the desktop. Some cons: Very weak battery or engine. The screwdriver can only be used with very little force. The battery charge does not last very long.