Festool Festool Hsk-d-150 Round Sanding Block (Soft) - 495965 - Ergonomic, comfortable design is easy on the hands. Perfect for detail sanding where power sanding would be too aggressive. Round design (wrapped) compatible with full line of Festool 6 inches (150mm) abrasives; the same abrasives used with the Rotex RO 150 and ETS 150 sanders. Soft pad for fine sanding and touch ups.Soft pad for fine sanding and touch ups.Perfect for detail sanding where power sanding would be too aggressive. Works with all Festool 6 inch (150mm) abrasives.