The Norton A259 3X Stick & Sand 4-1/2 x 4-1/2" square sanding sheet can be used for hand sanding and has a PSA mounting system for quick sheet changes on jitterbug sanders. The pressure-sensitive adhesive (PSA) coating makes it quick and easy to attach and change the sandpaper sheet. The aluminum oxide grit is one of the most common choices for general-purpose grinding of most materials and is more durable than silicon carbide grit. The abrasive has been treated with a water-based zinc stearate coating that prevents clogs from forming and can be used in wet sanding applications. The abrasive and bond do not contain dyes, so colors will not transfer to the workpiece. The sheet has an open coat, which resists clogging and promotes flexibility. Open coat abrasives produce a rougher finish when abrading difficult-to-sand materials because the abrasive grains are spaced farther apart than they are on a closed coat product. The fiber-reinforced C-weight paper combines the flexibility and lightness of paper with the strength of fiber to create an edge tear-resistant backing that delivers a consistent finish.