Aluminum oxide abrasive material has many advantages over other abrasives including: Cost-Effectiveness: It is generally less expensive than most of the other abrasive grains, especially like ceramic alumina. Versatility: One of aluminum oxide's biggest advantages is its versatility. It can be used on a variety of surfaces, from metals to woods, and for different processes including grinding, deburring, and finishing. : Aluminum oxide is a tough material that resists wearing down. Abrasives made from aluminum oxide often last longer than those made from softer materials. Performance: Known for its nature, aluminum oxide maintains a longer than many other abrasive materials. Availability: As one of the most common abrasive grains, aluminum oxide products are widely available in a variety of forms and most grits. Colour: As Shown Material: Alumina Package Contents: 10 * 75x533mm Sanding Belts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.