For rapid manual sanding of flat and curved surfaces, this sanding block has an ergonomic design that is easy on the hands. Perfect for detail sanding where power sanding would be too aggressive. Suitable for long sanding operations when combined with a dust extractor, it has a hard rectangular pad for edge work and corners. Compatible with full line of Festool 80mm × 133mm abrasives, the same abrasives used with the RTS 400 and LS 130 sanders.