Safe processing of self-drilling and thread-forming screws up to 4.8 mm, with or without sealing washers, as well as for wing Teks. The lightweight cordless screwdriver enables fatigue-free working in roof and facade construction, as well as in heating, ventilation, and air conditioning technology. It features an adjustable, torque-sensitive FEIN universal coupling for optimal torque selection when working without a depth stop, along with a FEIN high-performance motor and a practical hand strap.