The new cordless sanders RTSC 400, DTSC 400, ETSC 125 provide outstanding mobility at work. The powerful 18 V Ergo battery with 3.1 Ah delivers the same performance as a corded model and gives the 1.4 kg lightweight machine unmatched ergonomics. The integrated dust extraction combined with the Longlife dust bag makes the machine easy to handle, allowing you to work overhead or in hard-to-reach places with ease. For completely unlimited runtime, you can replace the battery with a plug-it mains adapter. Mobile and comfortable: without cords and hoses, with perfect ergonomics, low height, and a weight of only 1.4 kg. Performance like a corded tool, and maintenance-free with a brushless EC-TEC motor. Continuous operation: with the 3.1 Ah battery that works longer than it needs to charge. The same machine in the workshop and out on the job - with the mains adapter, you can choose whether to work with battery or cord. Dust-free and health-friendly: with the Longlife dust bag made of extra durable polyester fabric or in combination with a Festool vacuum cleaner. Minimal reworking: PROTECTOR for gentle sanding along window surfaces, frames, and door panels. Sand without a cord where power outlets are lacking or where access is difficult (e.g., outdoors, on scaffolding). Work mobile if you find that the mains cable and suction hose are in the way (e.g., on vertical surfaces, overhead, when edge sanding…). Ideal for vertical surfaces or work above head height. One-handed sanding for small and narrow surfaces. Sand paint and varnish on window frames, door frames, and crown moldings. With the plug-it mains adapter, it becomes a sander with unlimited runtime in continuous electric operation – perfect in combination with a Festool vacuum cleaner indoors in Systainer SYS3 M 187