Fein 63717227010 mixed sanding disc set for universal coarse to fine sanding across a wide range of materials. Made with corundum abrasive grit and full synthetic resin bonding for high sanding performance, reduced clogging and long service life. The 115 mm perforated discs can be used with or without dust extraction and feature hook-and-loop fastening for quick abrasive changes. Supplied as a 16-piece mixed set with 4 discs each in 60, 80, 120 and 180 grit.