The cylinders of all NPK shears, crusher, and pulverizers are designed to automatically activate the booster if the jaws meet resistance. Due to this patented booster the attachment is faster, needing only a relatively low amount of oil, and has a higher power than similar devices with normal or differential valve cylinders. Saying that normally a NPK tool is as strong as a larger size model of the competition - but with the great advantage of lower weight. With significantly shorter cycle times you can be more productive and save fuel. This makes NPK the best choice for tough applications in demolition or recycling.