I used them at my job cutting sheet metal and aluminum all day for 10 hours a shift 5 and 7 days a week. They've held up amazingly well. I love that I can use a cordless drill to work with these shears. I saved time, money, stress and tension. And the people at Malco are great if you need anything. They stand behind their product 100%. I had a problem a month later and they replaced it for free. I would recommend them to anyone, traders, professionals or those doing it themselves.