Destruction device very effective and robust appearance. By cons it is necessary to avoid destroying 12 sheets at a time, that personally I have not even tried because already with 6 or 7 leaves the destruction rate is reduced and the engine worth more. But be aware that this instrument is addressed to individuals for reasonable amounts of paper and that it is better to take the time to proceed in small quantities to preserve the life of the product. For my part I am very satisfied with this camera with which I have already made 300 liters of confetti!