Even if you hold it in your hand and use sandpaper to adjust the nut and saddle, you won't be able to accurately sand it, and even though it's a small process, it will take a lot of time and be quite tiring.
Also, there are many comments about how even inexpensive plastic tools can't sharpen accurately.
This product is made of steel and is professional grade, but there are many similar products made of steel that are cheaper than this product on Amazon.
On the other hand, there are similar products that are higher in price than this product, and there are variations in price, but these products are almost without exception the same product.
It may be better to know the difference between this product and similar products in advance, but it is easy to tell the difference between similar products and this product.
Please take a look at "See more" to understand them.
If you look at similar products on this site, there are many colors, but without exception, there is a radial pattern in the red circle in the fifth image. Prices for this type vary depending on the shop, but they are all the same. Our store has been dealing with this type, but there are concerns about long-term use depending on the lot, so we recommend the products currently on sale. When fixing the saddle with this product, you tighten the screw on the side of the main body to fix the saddle, etc., but it is almost like a temporary fixing by driving a slightly oversized shaft into the hole in the blue circle that opens on the side (although it seems that there is some adhesive on it).It may be safe to use at the moment, but the shaft is not firmly fixed, so there is a possibility that it will come off while you are using it. It's a serious thing, but if it comes out during use, it means that it is no longer in its initial state, so there is a high possibility that it will come out every time you use it after that. In our store, there were many items that were not used for a long time, but were loose from the purchasing stage. On the other hand, the side hole of this product that fixes this shaft is of the type that fixes this shaft with a screw, so even if it becomes loose, you can retighten the screw.
You can use it forever. Of course, even with similar products, we cannot guarantee that the above conditions will occur, and there may be cases where the product is only used for a short period of time. However, this product is definitely better in quality and accuracy than similar products, so we recommend it with confidence.