Universal Fit Assorted Punched Orbital Sanding Sheet Set - (L)115mm (W)115mm, Pack Of 10

It means the pack contains sanding sheets with different levels of coarseness, ranging from coarse grits for rapid material removal to fine grits for smoothing and finishing.

No, these sheets are specifically designed for 115mm random orbit sanders that use a hook and loop attachment system. They will not fit other types of sanders.

For removing material quickly (like paint or varnish), use a coarser grit (lower number). For smoothing surfaces and preparing for finish, use a finer grit (higher number).

The lifespan depends on the material being sanded, the grit used, and the pressure applied. They are consumables and will eventually wear out.

They are suitable for most common materials including wood, metal, plastic, and painted surfaces.

Sanding sheets are intended for single-use on specific tasks or grit levels. They lose effectiveness as they wear down or become clogged with dust.

Ensure the sander's backing pad is clean and free from dust or debris. The hook and loop system on the sheet may also be worn; replace the sheet.

Verify that the holes on the sanding sheet are aligned with the dust ports on the sander. Check that the dust collection system (vacuum or bag) on your sander is not full or blocked.

Check that the sanding sheet is applied evenly and centered on the sander's pad. Avoid applying excessive pressure, as this can lead to uneven results and premature wear of the sheet.