The LUM series is the workhorse of our pneumatic screwdriver line-up. Designed to be comfortable to work with all day and to be durable in a tough production environment, they combine the best engineering, continuously refined and improved, to bring you superior ergonomics, durability and productivity. All LUM models are equipped with a spring-operated shut-off clutch, designed by Atlas Copco that is set with a Philips screwdriver – simple, fast and reliable!