Aluminum Oxide Silversmiths' Flat Tapered Stone 4" x 5/16" x 3/16" - 1/16" Made in the USA from the very coarse nagura

from the very coarse nagura with the 200 grit Green Stone to the medium grit nagura matched with the 1000 Grit White Stone on to the fine nagura paired with the 4000 grit Yellow stone

These Hard Black Arkansas stones are very fine stones

so why would you use anything less than the best to flatten them

there are now an additional 6 grits to choose from

It's a powerhouse in sharpening efficiency with intelligent design

Aluminum Oxide Silversmiths' Flat Tapered Stone 4" x 5/16" x 3/16" - 1/16" Made in the USA from the very coarse naguraAluminum Oxide Stones Aluminum oxide stones excel at refining surfaces, offering a finer finish than silicon carbide stones. Their durability and ability to hold their shape well make them ideal for touching up special instruments, cleaning tools and dies, and for honing to close tolerances. These stones are a good choice when a high quality finish and accuracy are critical. Oil Filled These Aluminum Oxide Stones are filled with oil in manufacturing,