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A sponge with just the right hardness and thickness makes sharpening work surprisingly easy!
A sponge file that uses a highly durable cloth file.
Unlike sandpaper, cloth sanding has the versatility to be used in a variety of situations, including smoothing and processing curved and flat surfaces.
We have a lineup that corresponds to various uses and can be used in a variety of situations.
The sponge surface has a print that allows you to see the count at a glance.
The printed part uses ink that does not easily bleed, so the ink does not dissolve easily during wet sanding, allowing you to work with peace of mind.

It is 5mm thick and does not bend easily, and contains 5 pieces of No. 4000 necessary for sharpening.
Uses a file with long-lasting cutting power.
It is cost-effective because it can be used for a long time by removing cutting dust.
Does not wrinkle easily even when folded
Can be cut into desired shape
It is hard to tear, so you can use it by pinching it with tweezers etc.
Compatible with air sharpening and wet sharpening
The count can be identified by the color of the sponge itself and the printed letters.