For the serious woodworker or tradesperson, the Festool DTS 400 is a top-tier detail sander. It's a delta (triangular) sander, perfect for getting into corners, sanding right up to edges, and working on detailed areas like window frames, moulding, or furniture. It's incredibly compact and lightweight at just 1.2 kg, which makes sanding overhead or on vertical surfaces way less tiring. The big deal is the MMC electronics – Festool says it gives you up to 25% better material removal while keeping the speed consistent and powerful. It hooks up to Festool's dust extractors for virtually dust-free work, or you can use the included long-life dust bag. It also has a nifty 'PROTECTOR' edge guard attachment to help prevent you from accidentally rounding over sharp edges. It's a professional-grade tool designed for continuous, precise work. If you do a lot of finishing sanding, paint prep, or detail work, this sander is a game-changer.