Wet/Dry Sandpaper 320 Grit 5 Pack

Refine your surfaces with this versatile 5-pack of 3M® Wet/Dry Sandpaper. These extra-fine 320-grit sheets are built on waterproof paper with a durable silicone carbide abrasive that cuts quickly and leaves a smooth, even finish. Use them wet (with water or cutting oil) or dry to sand between coats of varnish, lacquer and paint, or to prep metal, plastic and other materials for primer and repainting.

Whether you’re smoothing wood after staining or removing rust from metal, this sandpaper delivers consistent performance and extended life—waterproof backing reduces clogging, and the sharp synthetic mineral resists tearing. Ideal for automotive, woodworking, marine and DIY projects, each 9 in × 11 in sheet ensures professional-quality results every time.

Key Features

• Perfect for wet or dry sanding between coats of varnish, lacquer, paint and other finishes
• Sharp silicone carbide mineral cuts fast and leaves an ultra-smooth surface
• Waterproof paper backing resists moisture and extends abrasive life
• Extra-fine 320 grit delivers delicate abrasion for finishing and polishing
• Pack of five full-size 9 in × 11 in sheets for multiple projects