320 Grit Sandpaper , 8 8 Hole Hook & Loop Sanding Disc, Qty:50

320 Grit 8-in. Discs 8-Hole Hook&Loop QTY:50

Aluminum Oxide sandpaper, Perforated, 8 in, Hook and Loop

Application: wood, paints, filler, automotive paints, fiberglass, plastics.
Quality: fully synthetic-resin bonded, corundum.
Features: greatly reduces loading, flexible.

• Perforated version for excellent dust extraction
• Fits: MSf 636-1 Random Orbit Sander 8 in.
• 320 Grit is very fine for finishing work

Aluminum Oxide (AO)

AO is formed by combining bauxite and other materials by firing them in an electric furnace. The resultant mass is then crushed, and the pieces sifted through successively finer screens to assign a grit size (CAMI grading). When crushed, the resulting pieces are naturally pyramidal in shape. Due to the shape and the strength of the materials used in its making, AO is a very durable grain. The grain wears down during use, becoming finer the longer it's used. So theoretically, you can start at 80 grit, and after you've worked the abrasive for a while, you'll be sanding more like 100 or 120 grit.

AO is very tough and durable, as stated above, and is used on bare wood, most metals (especially the steels), leather, and a wide variety of other materials. It is a great general-purpose grain and probably the most common grain seen today.