SIZE: Outer Diameter: 125mm, Inner Diameter: 22.23mm, Grit: 40 60 80 120 HIGH QUALITY: High quality high temperature calcined sand, high quality cloth base, multi-layer sand disc, high abrasive performance, durable HIGH PERFORMANCE: 125mm overhang edge, thicker and wider blades for easier grinding, can easily handle larger areas 4 TYPES: Different fineness specifications for different surface treatments such as weld processing, polishing, cleaning, deburring, rust removal, paint removal, etc. VERSATILITY: Suitable for stainless steel, PVC, metal/steel and wood