The Fischer FIX IT Repair Fleece is a practical helper for repairing damaged drill holes. The fleece, covered with a special mortar, is dampened before use and wound around a dowel, then inserted into torn or oversized drill holes. It's suitable for use in various building materials like concrete, hollow ceilings, solid bricks, and aerated concrete. For larger tolerances, it can be applied in multiple layers. After approximately 3 minutes, it hardens, allowing for repairs without the need for re-drilling. This pack contains 10 FIX IT pads.