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The 3M? Scotch-Brite? hook-and-loop sanding disc offers an ideal first-step for cleaning, blending, deburring, and finishing. This surface-conditioning disc features durable, nonwoven fiber construction that conforms well on irregular or contoured surfaces without undercutting or damaging the base material. The open-web material also runs cool and resists loading, while the evenly distributed aluminum oxide abrasives produce a high cut-rate for consistent finishing. As a tough, durable abrasive, aluminum oxide self-fractures to expose fresh cutting edges in use, whereas traditional abrasives such as garnet, quickly wear down with use. ? Aluminum oxide mineral offers hardness, strength, and low heat retention for use in grinding applications. ? Use in woodworking and metalworking, including ferrous alloys. ? Also suitable for composite, plastics, and other materials. Item: Hook-and-Loop Sanding Disc Abrasive Type: Non-Woven Vacuum Hole Design: Non-Vacuum Disc Diameter: 5" Abrasive Grade: Medium Abrasive Material: Aluminum Oxide Disc Backing Material: Paper Series: SC-DH Color: Maroon