This Arctic Fox puck is made in the USA to specifications of those who use and appreciate axes. Each side of the puck features a different grit. On the coarse, darker side we have a 240 grit, and on the lighter blue side a 400 grit. The 400 grit is usually all it takes for a quick touch up! If your axe has suffered from a strike in the ground, or hit a rock then the 240 grit is an excellent start. The blue sapphire ceramic stone is soft enough to cut, and keep cutting, but hard enough to where you won't dig into the stone. You'll see the LH logo on all of these pucks, as we proudly endorse the Arctic Fox puck.