High Quality Felt Disc: 1.Corner grinding (sanding) 2. ... , easy to change. Our Product advantages: 1, cooling rapidly, the high-speed abrasive-resistant. 2, high wear resistance and high flexibility. ... 3, grinding ability, and the Silk Road even clear, good brightness 4, good self-sharpening 5, the workpiece to ... small, non-pollution. 7, safe and without noise. High Quality Felt Disc