Festool 499973 Surface Grinder Diamond Disc DIA ABRASIVE-D130-ST PREMIUM delivers results when processing abrasive substrates. This 130 mm diameter grinding disc is specially designed for abrasive materials on smaller surfaces that contain a lot of sand. Crafted with high-quality materials and featuring a durable segment height, this disc an exceptionally long service life, making it a reliable choice for demanding grinding tasks. Model Number: 499973