A 10mm thick hard sponge, ideal for sharpening! Excellent workability with a size and thickness that are easy to hold! A set of 5 types suitable for polishing! With a sponge of moderate hardness and thickness, sharpening work is surprisingly easy! Since it is cut to a size that is easy to hold, it is easy to handle, and it is also easy to use even when scraping a small surface. Uses a highly durable and hard-to-break sponge. Since it is a sponge, it can be freely cut and used according to the place you want to file. Uses ink that does not easily bleed, so you can use it with confidence even when polishing with water. A new # 2000 that connects from the normal count # 1000 is available. It will be easier to start sharpening. Set contents (Thickness 10mm): #2000/2pieces, #4000/2pieces, #6000/2pieces, #8000/2pieces, #10000/2pieces 2packs are a great deal. The solid black with elegant Pink Gold-accented tip and clip looks luxurious. Sensitive Rubber Tip is designed for use with most touch screen devices. I also works as a cushion when retracting or extending the tip. Beautiful looking Blue Black ink.