Durable black colored aluminum oxide in medium grits.
Primarily used for block hand sanding, 3M WetorDry sandpaper has a more aggressive cut than production paper of the same grade.
The ability to use it with water provides several advantages:
Water acts as a lubricant, allowing for better cutting with less effort.
The use of water also makes the sanding process dustless and helps keep the abrasive surface cleaners.
• For fine sanding prior to compounding
• Ability to use wet keeps dust down
• "A" weight paper backing