Tactix delta type sanding sheet. 

The sanding grains (grit), contained per square millimeter in the product, amount to K50. 

The higher the sandpaper number, the higher the grain density per square millimeter. 

So in the small numbers (e.g. 24, 36, 40...), we have few grains but with a large diameter that make them ideal for quickly smoothing rough surfaces, while in the large numbers (e.g. 180, 220, 320...), we have more grits with a smaller diameter and are ideal for intense sanding and a smooth finish. 

You should also know that when sanding with a sander the action is clearly greater than by hand. 

Its dimensions are 93x93mm. 

The package contains 10 pcs.