Festool 499099 STF D125/90 P180 RU2/50 Sanding Discs for RO125/ETS 125 (Pack of 50). These discs eliminate clogging, ensuring the abrasive stays sharp, leading to a 30 percent faster removal rate. They are designed to prevent clogging caused by the buildup of pitch and wood fibers. Weight: 0.84 lbs. Grit: P180. Diameter: 125 mm. Manufacturer: Festool.